求助：悬停错误红线时光标消失、error-popup异常问题

Hey there, let’s work through this annoying error popup and tooltip issue together— I’ve run into similar IDE UI glitches before, so let’s start with the most straightforward fixes first.

1. Reset IDE Caches & Configuration #

Corrupted IDE caches are a super common cause of weird UI quirks like missing tooltips or vanishing popups. Here’s how to fix it for most popular IDEs:

• For IntelliJ/PyCharm/WebStorm etc.: Head to File > Invalidate Caches..., select "Invalidate and Restart", and let the IDE rebuild its caches from scratch. (Pro tip: Back up any custom settings first if you’re worried about losing tweaks.)
• For VS Code: Open the command palette (Ctrl+Shift+P or Cmd+Shift+P), run Developer: Reload Window first. If that doesn’t help, try renaming the .vscode folder in your project (keep a copy!) and restarting the IDE to reset workspace-specific settings.

2. Rule Out Plugin Conflicts #

Third-party plugins often clash with core IDE functionality, especially around UI elements like tooltips. Try disabling all non-essential plugins one by one, restarting your IDE each time, and testing if the hover tooltip stays visible and popups stop disappearing. Once you find the problematic plugin, update it to the latest version or remove it entirely.

3. Update Your IDE & Language Extensions #

Outdated IDE versions or language servers frequently have known bugs related to tooltip rendering. Make sure your IDE is fully updated (check the "Check for Updates" option in the Help menu), and also update any language-specific extensions (like Python, TypeScript, etc.) to their latest releases. A lot of these kinds of UI glitches get patched in newer versions.

4. Tweak Display & Scaling Settings #

Display scaling or high-DPI settings can mess with tooltip positioning and visibility, especially on multi-monitor setups:

• Check your IDE’s appearance settings (look for "Appearance & Behavior > Appearance" in IntelliJ, or "Settings > Appearance" in VS Code) and try toggling "Use custom scaling" or adjusting the scaling percentage.
• If you use multiple monitors, move your IDE window to the primary display and test the hover tooltip again—some IDEs struggle with rendering tooltips on secondary screens.

5. Test with a Fresh, Minimal Project #

Since you’ve already tested with a project and recorded a video of the issue, try creating a brand new, simple project (just a single file with a deliberate error, like a syntax mistake) and see if the same problem occurs. If it doesn’t, the issue is likely tied to your original project’s configuration files (like .idea folders in IntelliJ or workspace settings in VS Code).

For the vanishing error popups: This feels like either a focus bug (something stealing focus from the IDE) or a rendering glitch. The cache reset and plugin checks above should cover most cases, but you can also check if background apps (like chat tools, system notifications) are pulling focus away when the popup appears.

If none of these steps resolve the issue, you’ll want to report this as a bug to your IDE’s official issue tracker. Be sure to include details like your IDE version, operating system, and a description of the video you recorded (since links aren’t allowed, you can note that the video shows hover tooltips failing to appear and popups disappearing immediately after opening, even when using a stylus).

内容的提问来源于stack exchange，提问作者KimRuhr