It's Called Fog Panther. Flathub: FogPanther Claims to be written in GTK4. Looks like a modified GIMP. Made by a business consulting firm, looks sketchy to me.
The program Fog Panther (if this it the program the OP is referring to) was already rejected for using (entirely?) Ai: https://github.com/flathub/flathub/pull/8077 . 3 weeks ago they closed it with conclusion:
Sorry we don't review AI Slop.