diff --git a/src/aiidalab_qe/app/result/components/status/status.py b/src/aiidalab_qe/app/result/components/status/status.py
index c86fea262..7deec95ef 100644
--- a/src/aiidalab_qe/app/result/components/status/status.py
+++ b/src/aiidalab_qe/app/result/components/status/status.py
@@ -118,54 +118,29 @@ def __init__(self, node, level=0, **kwargs):
         self.uuid = node.uuid
         self.level = level
         self.label = ipw.HTML(self._humanize_title(node))
-        self.state = ""
         self.emoji = ipw.HTML()
-        self.status = ipw.HTML()
-        self.inspect = ipw.Button(
-            description="Inspect",
-            button_style="info",
-            layout=ipw.Layout(width="fit-content", margin="0 0 0 5px"),
-        )
-        self.pks = set()
+        self.state = ipw.HTML()
         self.title = ipw.HBox(
             children=[
                 ipw.HTML(self._get_indentation(level)),
                 self.emoji,
                 self.label,
-                self.status,
-                self.inspect if isinstance(node, orm.CalcJobNode) else ipw.HTML(),
+                ipw.HTML(" | "),
+                self.state,
             ],
             layout=ipw.Layout(align_items="center"),
         )
-        self.branches = ipw.VBox()
         super().__init__(
             children=[
                 self.title,
-                self.branches,
             ],
             **kwargs,
         )
 
-    def update(self):
-        node = orm.load_node(self.uuid)
-        self._add_children(node)
-        self.state = self._get_state(node)
-        self.emoji.value = self._get_emoji(self.state)
-        self.status.value = self._get_status(node)
-        for branch in self.branches.children:
-            if isinstance(branch, TreeNode):
-                branch.update()
-
-    def _add_children(self, node):
-        for child in node.called:
-            if child.pk in self.pks:
-                continue
-            if child.process_label == "BandsWorkChain":
-                self._add_children(child)
-            else:
-                branch = TreeNode(child, level=self.level + 1)
-                self.branches.children += (branch,)
-                self.pks.add(child.pk)
+    def update(self, node=None):
+        node = node or orm.load_node(self.uuid)
+        self.state.value = self._get_state(node)
+        self.emoji.value = self._get_emoji(self.state.value)
 
     def _get_indentation(self, level=0):
         return " " * 8 * level
@@ -180,28 +155,6 @@ def _get_emoji(self, state):
             "excepted": "❌",
         }.get(state, "❓")
 
-    def _get_status(self, node):
-        return f"({self._get_tally(node)}{self.state})"
-
-    def _get_tally(self, node):
-        if not isinstance(node, orm.WorkflowNode):
-            return ""
-        inputs = node.get_metadata_inputs()
-        processes = [key for key in inputs.keys() if key != "metadata"]
-        total = len(processes)
-        if node.process_label == "PwBaseWorkChain" and "kpoints" not in node.inputs:
-            total += 1  # k-point grid generation
-        if node.process_label == "PwBandsWorkChain":
-            total += 1  # high-symmetry k-point generation
-        finished = len(
-            [
-                child.process_state
-                for child in node.called
-                if child.process_state is ProcessState.FINISHED
-            ]
-        )
-        return f"{finished}/{total} job{'s' if total > 1 else ''}; "
-
     def _get_state(self, node):
         if not hasattr(node, "process_state"):
             return "queued"
@@ -235,13 +188,81 @@ def _humanize_title(self, node):
         return mappings.get(title, title)
 
 
+class WorkChainTreeNode(TreeNode):
+    def __init__(self, node, **kwargs):
+        super().__init__(node, **kwargs)
+        self.tally = ipw.HTML()
+        self.title.children += (ipw.HTML(" | "),)
+        self.title.children += (self.tally,)
+        self.pks = set()
+        self.branches = ipw.VBox()
+        self.children += (self.branches,)
+
+    def update(self, node=None):
+        node = node or orm.load_node(self.uuid)
+        super().update(node)
+        self.tally.value = self._get_tally(node)
+        self._add_children(node)
+        branch: TreeNode
+        for branch in self.branches.children:
+            branch.update()
+
+    def _add_children(self, node):
+        for child in node.called:
+            if child.pk in self.pks:
+                continue
+            if child.process_label == "BandsWorkChain":
+                self._add_children(child)
+            else:
+                TreeNodeClass = (
+                    WorkChainTreeNode
+                    if isinstance(child, orm.WorkflowNode)
+                    else CalculationTreeNode
+                )
+                branch = TreeNodeClass(child, level=self.level + 1)
+                self.branches.children += (branch,)
+                self.pks.add(child.pk)
+
+    def _get_tally(self, node):
+        inputs = node.get_metadata_inputs()
+        processes = [key for key in inputs.keys() if key != "metadata"]
+        total = len(processes)
+        if node.process_label == "PwBaseWorkChain" and "kpoints" not in node.inputs:
+            total += 1  # k-point grid generation
+        if node.process_label == "PwBandsWorkChain":
+            total += 1  # high-symmetry k-point generation
+        finished = len(
+            [
+                child.process_state
+                for child in node.called
+                if child.process_state is ProcessState.FINISHED
+            ]
+        )
+        return f"{finished}/{total} job{'s' if total > 1 else ''}"
+
+
+class CalculationTreeNode(TreeNode):
+    def __init__(self, node, **kwargs):
+        super().__init__(node, **kwargs)
+        self.inspect = ipw.Button(
+            description="Inspect",
+            button_style="info",
+            layout=ipw.Layout(width="fit-content", margin="0 0 0 5px"),
+        )
+        self.title.children += (self.inspect,)
+
+
 class SimplifiedProcessTreeModel(Model, HasProcess):
     """"""
 
 
 class SimplifiedProcessTree(ipw.VBox):
     def __init__(self, model: SimplifiedProcessTreeModel, **kwargs):
-        super().__init__(**kwargs)
+        self.loading_message = LoadingWidget("Loading process tree")
+        super().__init__(
+            children=[self.loading_message],
+            **kwargs,
+        )
         self.add_class("simplified-process-tree")
         self._model = model
         self._model.observe(
@@ -258,7 +279,7 @@ def render(self):
         if self.rendered:
             return
         root = self._model.fetch_process_node()
-        self.trunk = TreeNode(root)
+        self.trunk = WorkChainTreeNode(root)
         self.rendered = True
         self._update()
         self.children = [self.trunk]