With latest GTK4 from gitlab I get this strange message for one of my Nim example programs – for a GMenu with GActions and MenuButton in Headerbar.
Luckily I get similar messages for original C programs tests/testgaction.c also so I guess it is not Nim related.
$ ./testgaction
(process:29729): Gtk-WARNING **: 20:21:52.078: Broken accounting of active state for widget 0x5604b0cb2160(GtkBox)
(process:29729): Gtk-WARNING **: 20:21:52.079: Broken accounting of active state for widget 0x5604b0bf63c0(GtkWindow)
(process:29729): Gtk-WARNING **: 20:22:03.655: Broken accounting of active state for widget 0x5604b0cb2160(GtkBox)
(process:29729): Gtk-WARNING **: 20:22:03.655: Broken accounting of active state for widget 0x5604b0bf63c0(GtkWindow)
But I have no idea what that message is about, my GTK4 is installed on /opt built from gitlab sources. Was working mostly fine before, but I did an update today.