Hello, > This might mean that gnome-builder has an undeclared dependency on something else that is depended on by flatpak.
I just ran sudo apt purge flatpak, which resulted in flatpak* and flatpak-builder* being removed. After this, I can reproduce the problem again (crash at startup) > Those look like messages from gdb? It seems related as after uninstalling gdb, I no longer get these messages. Instead: $ gnome-builder Segmentation fault > If you create a new user account on the same system (so your home > directory and personal configuration are not in use), can you run > gnome-builder successfully as that user? No, it also crashes with the same error messages