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

导出pdf：当有相同的文档标题时，导出pdf会没有目录

Expected result

正常导出目录

Screenshot or screen recording presentation

No response

Version environment

- Version: 3.1.14 dev5
- Operating System: win11
- Browser (if used):

Log file

无

More information

No response