Yesterday, #Gajim 2.1.1 migrated to #Debian 13 #trixie, a.k.a. #testing. Works very well for me!
However, there is an issue with #EXWM and #GTK4: Marking text and copy/paste via keyboard is broken in the text input field of Gajim. I guess, there is sth. missing in the #portals definition. It only says:
[preferred]
default=gtk
Maybe that's not enough?