[bug] Cyrillic languages (and possibly others) replaced by an unreadable square font in the update window

[blind-confused]

whenever I launch Steam and it decides to check for updates (I assume that's what's happening?), the window looks like this.
my system language is Russian, but I'm assuming it's probably the case for all Cyrillic languages. Could also be other languages with different alphabets, like anything Asian, etc. I assume it's some sort of issue with font language support, since the word "Steam" looks fine.

this isn't a very important bug obviously (I can still use Steam just fine), but in case this also happens in an error window that asks the user to select an option, then it could be problematic, so I thought it should be mentioned here.

my system is Fedora 41 Workstation (GNOME desktop), using the flatpak Steam, fully updated.