Looking at the stack trace, there is pygi_callable_info_invoke (source: pygobject) -> pygi_invoke_c_callable (source: pygobject) -> gtk_builder_add_from_file (source: gtk+3.0) -> _gtk_settings_get_screen (source: gtk+3.0)
To fix this bug in apport, gtk_builder_add_from_file should raise an Exception. So I mark gtk+3.0 as affected.
Looking at the stack trace, there is pygi_callable_ info_invoke (source: pygobject) -> pygi_invoke_ c_callable (source: pygobject) -> gtk_builder_ add_from_ file (source: gtk+3.0) -> _gtk_settings_ get_screen (source: gtk+3.0)
To fix this bug in apport, gtk_builder_ add_from_ file should raise an Exception. So I mark gtk+3.0 as affected.