Semantic highlighting fails when scrolling below a certain position

[jules-contact]

I have a weird comportement when i have a tag in the same file

Enregistrement.de.l.ecran.mp4

Repro :

<script setup lang="ts">
const bordered = defineProps({
  tag: {
    type: String,
    default: 'div',
  },
  background: {
    type: String,
  },
})
</script>

<template>
  <component
    :is="bordered.tag"
  >
    <slot />
  </component>
</template>

[kermanx]

Sorry, I can't reproduce this on my machine. Does this problem still happen in the latest version?

[MetRonnie]

Yes I still get this on v2.0.10 of the VSCode extension

Version: 1.92.1 (system setup)
Commit: eaa41d57266683296de7d118f574d0c2652e1fc4
Date: 2024-08-07T20:16:39.455Z
Electron: 30.1.2
ElectronBuildId: 9870757
Chromium: 124.0.6367.243
Node.js: 20.14.0
V8: 12.4.254.20-electron.0
OS: Windows_NT x64 10.0.19045

[kermanx]

Yes I still get this on v2.0.10 of the VSCode extension

The latest version is about v2.0.28.

[MetRonnie]

When I checked yesterday v2.0.10 was the latest available. This morning it suddenly updated to v2.0.28. The bug doesn't seem to be present anymore 👍

[MetRonnie]

Sorry I spoke too soon! Still present on v2.0.28 after I opened VSCode the next time.

It seems to lose the intellisense highlighting and fall back on the standard syntax highlighting randomly while scrolling.

Additional info:

[kermanx]

I've just managed to reproduce this for only one time. Does the sematic highlighting come back after waiting for a while?

[MetRonnie]

Semantic highlighting goes away when I scroll down and comes back when I scroll back up. It doesn't come back if I scroll down and wait for 10s. It might need a SFC file that is at least 150 lines long to reproduce?

[kermanx]

Possibly related to #4464 🤔 However, in that issue, there is no <component>

[MetRonnie]

Looks like a duplicate to me (although I am not author of either issue)

[youdemomo]

The cause of the code color loss is that the class name of the box that wraps the code changes as the page scrolls. Hope the official can pay attention to this problem, many vscode color themes will be affected.

I found this problem in the developer tools of vscode.