"uslugify" breaks header anchors list

[CMTV]

Description

Setting custom slugify function "uslugify" from pymodown breaks header anchors block at the right.

markdown_extensions:
    ...
    - toc:
          permalink: '#'
          slugify: !!python/name:pymdownx.slugs.uslugify
    ...

Expected behavior

When scrolling down headers are fading out. This gives a visual understanding of current position on the page.

Actual behavior

When scrolling, the browser console spams the following error:

Steps to reproduce the bug

1. In mkdocs.yml set a custom slugify function ("uslugify" in my case)
2. Add some cyrillic headers in index.md
3. Anchor links are not fading and the console spams the error when scrolling the page

[squidfunk]

Thanks for reporting, I can confirm this issue. Will look into it.

[squidfunk]

I tried to reproduce your test case and think I have a potential fix in ee0371d. Please try the master to see if the issue persists.

[CMTV]

Pardon, how can I update mkdocs theme?

I tried to run pip install mkdocs-material -U --force-reinstall. Nothing has changed...

[CMTV]

Ok. I can confirm it is fixed when directly adding material folder and setting custom_dir: 'material'.

[squidfunk]

The idea was that you check out the latest source from GitHub (see instructions) and validate whether the error is gone. Did you do that?

[CMTV]

Yep, I did. The bug is fixed.

[squidfunk]

Perfect! I will issue a release within the next few days. Until then, please use the current master.

[squidfunk]

Fix released as part of 3.3.0.