Links to ids doesn't work when using letters from foreign languages like Ż

[stpoa]

Below doesn't work in vmd.

• Click url

[Header with Ż link](#header-with-ż)
# Header with Ż

Without foreign characters works as expected:

[Header with Z link](#header-with-z)
# Header with Z

[maxkueng]

Interesting find. This work on GitHub if you use the same casing ([Header with Ż link](#header-with-Ż) instead of [Header with Ż link](#header-with-ż)).
However, this doesn't make it work in vmd.

The reason seems to be that the library that converts the MDAST to HTML escapes the character in the URL.

MDAST Node:

HTML:

This probably needs to be fixed in one of the remark or rehype libaries.