No fonts in some apps after upgrade to 9.1

After upgrading to Alma Linux 9.1, there are problems with fonts in some applications: gnome-shell-extension-prefs, gimp and the like. Fonts are visible as rectangles.
In logs I see such a lines:

scaled_font status is: file not found

My font is Cantarell and it works in Gnome and most of my apps.
I suspect some problems with Flatpak applications.
Any idea?

I have found that I have to run such command for every flatpak application:

flatpak run --command=fc-cache org.gnome.Extensions -f -v

Probably it should be run automagically :frowning:

I think this is related to an upstream issue:

For me, updating fc-cache fails like this:

% flatpak run --command=fc-cache org.gnome.DejaDup -f
fc-cache: ../../src/fccache.c:808: FcCacheFini: Assertion `fcCacheChains[i] == \
NULL' failed.

Can any of you run org.gnome.DejaDup on AL9.1?