diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/error.txt b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/error.txt
similarity index 100%
rename from packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/error.txt
rename to packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/error.txt
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/expected.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/expected.html
new file mode 100644
index 0000000000..c9d7568cf8
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/expected.html
@@ -0,0 +1,7 @@
+<x-component>
+  <template shadowrootmode="open">
+    <div>
+      foobar
+    </div>
+  </template>
+</x-component>
\ No newline at end of file
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/index.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/index.js
similarity index 100%
rename from packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/index.js
rename to packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/index.js
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/component/component.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/component/component.html
new file mode 100644
index 0000000000..2f5dab118f
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/component/component.html
@@ -0,0 +1,3 @@
+<template>
+    <div>Hello from the subclass {hello}</div>
+</template>
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/component/component.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/component/component.js
new file mode 100644
index 0000000000..f7c1d9bb5a
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/component/component.js
@@ -0,0 +1,5 @@
+import FancyElement from 'x/fancyElement';
+
+export default class extends FancyElement {
+    hello = 'foobar';
+}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/fancyElement/fancyElement.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/fancyElement/fancyElement.js
new file mode 100644
index 0000000000..7cccea449d
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/fancyElement/fancyElement.js
@@ -0,0 +1,8 @@
+import { LightningElement } from 'lwc';
+import tmpl from './tmpl.html';
+
+export default class extends LightningElement {
+    render() {
+        return tmpl;
+    }
+}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/modules/x/fancyElement/fancyElement.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/fancyElement/tmpl.html
similarity index 100%
rename from packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/modules/x/fancyElement/fancyElement.html
rename to packages/@lwc/engine-server/src/__tests__/fixtures/superclass/render-in-superclass/template-in-subclass/modules/x/fancyElement/tmpl.html
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/error.txt b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/error.txt
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/expected.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/expected.html
similarity index 100%
rename from packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/expected.html
rename to packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/expected.html
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/index.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/index.js
new file mode 100644
index 0000000000..cd34090d2c
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/index.js
@@ -0,0 +1,3 @@
+export const tagName = 'x-component';
+export { default } from 'x/component';
+export * from 'x/component';
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/modules/x/component/component.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/modules/x/component/component.js
similarity index 100%
rename from packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/modules/x/component/component.js
rename to packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/modules/x/component/component.js
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/modules/x/fancyElement/fancyElement.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/modules/x/fancyElement/fancyElement.html
new file mode 100644
index 0000000000..4668ade7da
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/modules/x/fancyElement/fancyElement.html
@@ -0,0 +1,3 @@
+<template>
+    <div>{hello}</div>
+</template>
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/modules/x/fancyElement/fancyElement.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/modules/x/fancyElement/fancyElement.js
similarity index 100%
rename from packages/@lwc/engine-server/src/__tests__/fixtures/superclass/basic/modules/x/fancyElement/fancyElement.js
rename to packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/basic/modules/x/fancyElement/fancyElement.js
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/error.txt b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/error.txt
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/expected.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/expected.html
new file mode 100644
index 0000000000..6334f2b8af
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/expected.html
@@ -0,0 +1,7 @@
+<x-sub>
+  <template shadowrootmode="open">
+    <div>
+      Hello from the subclass, world!
+    </div>
+  </template>
+</x-sub>
\ No newline at end of file
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/index.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/index.js
new file mode 100644
index 0000000000..5ab115aa5b
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/index.js
@@ -0,0 +1,3 @@
+export const tagName = 'x-sub';
+export { default } from 'x/sub';
+export * from 'x/sub';
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/sub/sub.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/sub/sub.js
new file mode 100644
index 0000000000..c00d0bcd1e
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/sub/sub.js
@@ -0,0 +1,10 @@
+import Super from 'x/super';
+import template from './template.html';
+
+export default class extends Super {
+    name = 'world';
+
+    render() {
+        return template;
+    }
+}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/sub/template.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/sub/template.html
new file mode 100644
index 0000000000..996a6c2829
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/sub/template.html
@@ -0,0 +1,3 @@
+<template>
+    <div>Hello from the subclass, {name}!</div>
+</template>
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/super/super.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/super/super.html
new file mode 100644
index 0000000000..dfc881e96c
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/super/super.html
@@ -0,0 +1,3 @@
+<template>
+    <div>Hello {name}</div>
+</template>
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/super/super.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/super/super.js
new file mode 100644
index 0000000000..ca8dce94e0
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/render-in-subclass/modules/x/super/super.js
@@ -0,0 +1,3 @@
+import { LightningElement } from 'lwc';
+
+export default class extends LightningElement {}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/error.txt b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/error.txt
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/expected.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/expected.html
new file mode 100644
index 0000000000..10d4747c0e
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/expected.html
@@ -0,0 +1,7 @@
+<x-sub>
+  <template shadowrootmode="open">
+    <div>
+      Hello from the super-super class, world!
+    </div>
+  </template>
+</x-sub>
\ No newline at end of file
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/index.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/index.js
new file mode 100644
index 0000000000..5ab115aa5b
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/index.js
@@ -0,0 +1,3 @@
+export const tagName = 'x-sub';
+export { default } from 'x/sub';
+export * from 'x/sub';
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/sub/sub.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/sub/sub.js
new file mode 100644
index 0000000000..f231ea175d
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/sub/sub.js
@@ -0,0 +1,5 @@
+import Super from 'x/super';
+
+export default class extends Super {
+    name = 'world';
+}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/super/super.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/super/super.html
new file mode 100644
index 0000000000..61b7172956
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/super/super.html
@@ -0,0 +1,3 @@
+<template>
+    <div>Hello from the super class, {name}!</div>
+</template>
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/super/super.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/super/super.js
new file mode 100644
index 0000000000..e74e61c6ac
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/super/super.js
@@ -0,0 +1,3 @@
+import SuperSuper from 'x/superSuper';
+
+export default class extends SuperSuper {}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/superSuper/custom.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/superSuper/custom.html
new file mode 100644
index 0000000000..9aab2b6660
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/superSuper/custom.html
@@ -0,0 +1,3 @@
+<template>
+    <div>Hello from the super-super class, {name}!</div>
+</template>
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/superSuper/superSuper.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/superSuper/superSuper.js
new file mode 100644
index 0000000000..1eb81fae81
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-render-in-super-super/modules/x/superSuper/superSuper.js
@@ -0,0 +1,8 @@
+import { LightningElement } from 'lwc';
+import Custom from './custom.html';
+
+export default class extends LightningElement {
+    render() {
+        return Custom;
+    }
+}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/error.txt b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/error.txt
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/expected.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/expected.html
new file mode 100644
index 0000000000..c434240160
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/expected.html
@@ -0,0 +1,7 @@
+<x-sub>
+  <template shadowrootmode="open">
+    <div>
+      Hello from the super class, world!
+    </div>
+  </template>
+</x-sub>
\ No newline at end of file
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/index.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/index.js
new file mode 100644
index 0000000000..5ab115aa5b
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/index.js
@@ -0,0 +1,3 @@
+export const tagName = 'x-sub';
+export { default } from 'x/sub';
+export * from 'x/sub';
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/sub/sub.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/sub/sub.js
new file mode 100644
index 0000000000..f231ea175d
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/sub/sub.js
@@ -0,0 +1,5 @@
+import Super from 'x/super';
+
+export default class extends Super {
+    name = 'world';
+}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/super/custom.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/super/custom.html
new file mode 100644
index 0000000000..61b7172956
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/super/custom.html
@@ -0,0 +1,3 @@
+<template>
+    <div>Hello from the super class, {name}!</div>
+</template>
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/super/super.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/super/super.js
new file mode 100644
index 0000000000..e1c9f67329
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/super/super.js
@@ -0,0 +1,8 @@
+import SuperSuper from 'x/superSuper';
+import Custom from './custom.html';
+
+export default class extends SuperSuper {
+    render() {
+        return Custom;
+    }
+}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/superSuper/superSuper.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/superSuper/superSuper.html
new file mode 100644
index 0000000000..9aab2b6660
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/superSuper/superSuper.html
@@ -0,0 +1,3 @@
+<template>
+    <div>Hello from the super-super class, {name}!</div>
+</template>
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/superSuper/superSuper.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/superSuper/superSuper.js
new file mode 100644
index 0000000000..ca8dce94e0
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super-render-in-super/modules/x/superSuper/superSuper.js
@@ -0,0 +1,3 @@
+import { LightningElement } from 'lwc';
+
+export default class extends LightningElement {}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/error.txt b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/error.txt
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/expected.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/expected.html
new file mode 100644
index 0000000000..eb7ff134a0
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/expected.html
@@ -0,0 +1,7 @@
+<x-sub>
+  <template shadowrootmode="open">
+    <div>
+      Hello world
+    </div>
+  </template>
+</x-sub>
\ No newline at end of file
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/index.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/index.js
new file mode 100644
index 0000000000..5ab115aa5b
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/index.js
@@ -0,0 +1,3 @@
+export const tagName = 'x-sub';
+export { default } from 'x/sub';
+export * from 'x/sub';
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/sub/sub.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/sub/sub.js
new file mode 100644
index 0000000000..f231ea175d
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/sub/sub.js
@@ -0,0 +1,5 @@
+import Super from 'x/super';
+
+export default class extends Super {
+    name = 'world';
+}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/super/super.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/super/super.js
new file mode 100644
index 0000000000..e74e61c6ac
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/super/super.js
@@ -0,0 +1,3 @@
+import SuperSuper from 'x/superSuper';
+
+export default class extends SuperSuper {}
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/superSuper/superSuper.html b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/superSuper/superSuper.html
new file mode 100644
index 0000000000..dfc881e96c
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/superSuper/superSuper.html
@@ -0,0 +1,3 @@
+<template>
+    <div>Hello {name}</div>
+</template>
diff --git a/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/superSuper/superSuper.js b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/superSuper/superSuper.js
new file mode 100644
index 0000000000..ca8dce94e0
--- /dev/null
+++ b/packages/@lwc/engine-server/src/__tests__/fixtures/superclass/template-in-superclass/template-in-super-super/modules/x/superSuper/superSuper.js
@@ -0,0 +1,3 @@
+import { LightningElement } from 'lwc';
+
+export default class extends LightningElement {}