A couple of related bugs which might help:
- https://bugzilla.mozilla.org/show_bug.cgi?id=1706219
- https://bugzilla.mozilla.org/show_bug.cgi?id=1685780
Although they seem focused on windows.
I see that @Dmitriy_Ermolaev uses a localized version of the browser. @thomas_henry & @1010189296 are you using the default english version or another locale?