文章中斜体/特殊字体镜像显示

[guaguastandup]

Before you asking

• I have searched the existing issues
• I spend at least 5 minutes for thinking and preparing
• I have thoroughly and completely read the wiki.
• I have carefully checked the issue, and it is unrelated to the network environment.

Environment

- OS: MacOS 15.3.1
- Python: Python 3.10.13
- pdf2zh: v1.9.6

How to install pdf2zh

pip

Describe the bug

尝试过的翻译引擎：豆包的deepseek-v3，bing，zhipu

未开启babeldoc时：翻译后的pdf中的特殊字体/斜体倒置显示了

开启babeldoc时：倒置+错行重合+部分字符消失

To Reproduce

1. execute '...'
2. select '....'
3. see errors

Expected behavior

No response

Relevant log output

Origin PDF file

urgaonkar.pdf

未使用babeldoc：

urgaonkar-dual.pdf

使用babeldoc：

urgaonkar-dual.pdf

Anything else?

No response