As you see, I don’t see friends list, number of players (top left corner), version (bottom right), key bindigs, server names, player stats in game (TAB key) etc. But everything else works good.
Probably I don’t have some fonts in openSUSE. But what fonts?
Possibly ms fonts - some are free to use, although not opensource.
You can search for the meta-package msttfonts (or msttffonts, not sure) in yast>Software Manager and it will download and install the fonts from the best third-party server it finds.
Note that missing fonts should be translated by the system to a similar installed one, so the above might not be the problem.