Roger router 2.4.2 (flatpak-install) crashes when clicking the printer symbol in menu.

Have installed Roger Router 2.4.2 from your current flatpak site on debian 12 bookworm derivate antiX 23.1 full runit 64 bit (fully apt-upgraded) with debian kernel 6.5.10-1~bpo12+1 successfully. After having followed all your install instructions found there, it starts up fine and all basic functionality like setting up a profile, sending fax messages or showing the call list works properly. Many thanks for that!

Issue description:

When clicking the printer symbol from the pulldown menu the program immediately crashes.

This is reproducable, it happens all the time.

When starting the program on console it prints an error message once clicking the symbol in the GUI, before terminating itself:

$ flatpak run org.tabos.roger

(Roger Router:2): GLib-GObject-CRITICAL **: 12:55:13.005: g_object_ref: assertion 'G_IS_OBJECT (object)' failed

No messages show up besides that.

Program can be restarted immediately and comes up fine again without complaints.

Side note: There is no hint what is actually going to be printed when clicking the symbol. Is it meant to print the currently highlighted Fax report, the conntection details of a highlighted entry in the call list, or will it print the complete listing, or even something else? There is no tooltip coming up for these symbols, and neither on your site https://www.tabos.org/projects/rogerrouter/ nor on https://flathub.org/apps/org.tabos.roger is any hint present what they could refer to precisely. Also I wasn't able to spot a description somewhere else in the internet.