Hello Joost,
I migrated my laptop to fedora 42. PTGui licence transfer and
installation went well. But PTGui apparently doesn't use the
xdg-desktop-portal to open file dialogues, even when I provide
GTK_USE_PORTAL=1 environment variable. Instead, it uses the less
comfortable GTK dialogue. It seems if you switch to
https://docs.gtk.org/gtk4/class.FileChooserNative.html it should work as
expected.
Also drag and drop from a smb share in dolphin doesn't work, but that
might be due to a smb:// URI is dropped, and PTGui likely doesn't
understand KIO.
--
Erik Krause
http://www.erik-krause.de