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

https://ld246.com/article/1745317171182
见此链接，经测试加粗/删除线/高亮/下划线/斜体均无效
并且自定义外观的菜单无法弹出
闪卡制作功能正常

Expected result

能正常应用行级外观样式

Screenshot or screen recording presentation

No response

Version environment

- Version: 3.1.28
- Operating System: 5.0.0.155
- Browser (if used):

Log file

无

More information

No response