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

默认主题可以复现，见视频。
首先我的pdf在左侧（77页），我在左侧打开新文档覆盖了pdf界面，然后我把该标签挪动到右侧，左侧pdf重新显示后被翻到了424页，有时是419页，有时是420页，不规律。

Expected result

希望能修复或解释原因。

Screenshot or screen recording presentation

No response

Version environment

- Version: 最新的2.8.5dev
- Operating System: windows
- Browser (if used):

Log file

无需

More information

No response