Why Polish letters in the code on the wiki page are highlighted? (BB-11308)

Issue #10323 duplicate
jsbien
created an issue

Why Polish letters on the page https://bitbucket.org/jsbien/ilindecsv/wiki/comment.md in the code block are highlighted?

I can live with it but find it rather annoying.

The problem seems general. My text actually is not a code, but non-ASCII letters may anyway occur in the code block in the program comments.