Can anyone assist in diagnosing whether GTK is at fault for an application's GUI failing to initialise, as its developer presumes?

I am attempting to why accerciser-3.46.2-5.fc43.noarch fails to invoke on my OS installation. My experience has been corroborated by a KDE developer with a very similar environment, so my experience is not unique.

Currently, I, and the developer, have confirmed, via py-bt, that the fault does not reside within Accerciser’s source. Afterward, we have confirmed, via `thread apply all bt full, that nothing indicates a fault within CPython, or IPC. The developer believes that a fault may reside within GTK: “It’s stuck in GTK’s main loop.”

If anyone with experience in GTK can, I would be glad for their input on whether anything, at least, indicates a fault in GTK, or not. The discussion is available at gitlab.gnome.org/GNOME/accerciser/-/issues/72, ≤ #note_2680535.

I ask here, per previous advice: