文档树计数悬浮乱跳，且顶栏标题也会乱跳

Is there an existing issue for this?

• I have searched the existing issues

Can the issue be reproduced with the default theme (daylight/midnight)?

• I was able to reproduce the issue with the default theme

Could the issue be due to extensions?

• I've ruled out the possibility that the extension is causing the problem.

Describe the problem

群友可以复现，没有启用插件，默认主题。

Expected result

希望修复。

Screenshot or screen recording presentation

No response

Version environment

- Version: 2.9.8dev1和2.9.7都有该问题
- Operating System: win
- Browser (if used):

Log file

无需

More information

No response