Premature context invalidation for content scripts

[DenizUgur]

Describe the bug

I've noticed that ContentScriptContext would get invalidated prematurely and therefore restrict any further use of wxt APIs. Initially I thought I missed some configuration with wxt but the minimal reproduction I've described below indicates that there might be a bug with wxt itself.

Reproduction

Either use the attached archive or follow the steps below:

1. Initialize a vanilla extension via pnpm dlx wxt@latest init
2. Use the following script as your content script.
3. This issue does not occur on all pages but try the documentation from Google: https://developers.google.com/docs/api/reference/rest
4. Sometimes this script will work be sometimes not. But the event listener without ctx will always work.

export default defineContentScript({
  matches: ["<all_urls>"],
  main(ctx) {
    console.log("Content script loaded", ctx.isValid);
    setInterval(
      () => console.log("Content script is alive", ctx.isValid),
      1000
    );
    window.addEventListener("keydown", (e) =>
      console.log("works without ctx", e.key)
    );
    ctx.addEventListener(window, "keydown", (e) =>
      console.log("doesn't work with ctx", e.key)
    );
  },
});

Reproduction archive: test.zip

Steps to reproduce

No response

System Info

System:
    OS: Linux 6.11 Ubuntu 24.10 24.10 (Oracular Oriole)
    CPU: (32) x64 Intel(R) Core(TM) i9-14900K
    Memory: 49.19 GB / 61.56 GB
    Container: Yes
    Shell: 5.9 - /usr/bin/zsh
  Binaries:
    Node: 22.13.0 - ~/.nvm/versions/node/v22.13.0/bin/node
    npm: 10.9.2 - ~/.nvm/versions/node/v22.13.0/bin/npm
    pnpm: 9.15.3 - ~/.local/share/pnpm/pnpm
  Browsers:
    Chrome: 132.0.6834.83

Used Package Manager

pnpm

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• The provided reproduction is a minimal reproducible example of the bug.