$ rpm -qR claws-mail|grep pixbuf libgdk_pixbuf-2.0.so.0()(64bit)
I've added
%if 0%{?fedora} > 40 Requires: gdk-pixbuf2-modules-extra%{?_isa} %endif
to fix the missing icons and the intercepted backtrace.
For Geeqie I've filed: https://bugzilla.redhat.com/2312404
It's not nice, if an image view suddenly doesn't recognize some image file formats like BMP anymore.