[Bug 1569943] upgrading from Liberation 1 to 2 in a desktop session can affect rendering of text

https://bugzilla.redhat.com/show_bug.cgi?id=1569943

--- Comment #2 from Nicolas Mailhot  ---
Yes, that's not specific to liberation at all, that's old and well-known broken
fontconfig/harfbuzz integration in Firefox, it does not properly invalidate its
font cache when fonts are updated. You have to close it to force it to parse
the new font file metadata otherwise it seems to try reading glyphs as their
location in the old font file even though the new font file has them moved
somewhere else (with metadata that correctly indicates where this somewhere
else is).

The bug should be reassigned