“Find and Replace” in menu is not working for Glyphs 3.3.1 (3343)

It’s weird that it works without problems for the same file in Glyphs 2.

I tried reinstalling python but it doesn’t solve the problem, while the other scripts just work fine.

I don’t find anything wrong with my Glyphs 2;
My collegure find nothing wrong with her Glyphs 3 in the same file;
It only happens in my Glyphs 3…

Tried rebooting system, reinstall glyphs 3 and its python module… And nothing works.
Any idea?

What find and replace do you mean? Can you post a screenshot?