Crash when switching to Design Mode
Similar to gnome-builder#1112 (closed), but different error:
sys:1: Warning: g_param_spec_internal: assertion 'is_valid_property_name (name)' failed
sys:1: Warning: validate_pspec_to_install: assertion 'G_IS_PARAM_SPEC (pspec)' failed
sys:1: Warning: g_object_new_is_valid_property: object class 'GladeWidget' has no property named 'composite'
09:27:02.6444 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6445 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6445 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6446 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6446 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6446 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6446 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6446 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6457 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6457 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6458 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6458 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6458 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6458 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6470 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6471 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6471 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6471 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6471 GladeUI[ 2]: CRITICAL: glade_project_new_widget_name: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6481 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6481 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6484 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6484 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6484 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6485 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6485 GladeUI[ 2]: CRITICAL: glade_project_new_widget_name: assertion 'GLADE_IS_PROJECT (project)' failed
sys:1: Warning: g_object_new_is_valid_property: object class 'GladeFixed' has no property named 'composite'
09:27:02.6491 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6492 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6492 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6492 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6492 GladeUI[ 2]: CRITICAL: glade_project_new_widget_name: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6496 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6496 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6496 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6496 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6497 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6497 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6497 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6497 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6497 GladeUI[ 2]: CRITICAL: glade_project_push_progress: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6497 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6498 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6498 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6498 GladeUI[ 2]: CRITICAL: glade_project_new_widget_name: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6501 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6502 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6502 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6502 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6502 GladeUI[ 2]: CRITICAL: glade_project_push_progress: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6503 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6503 GladeUI[ 2]: CRITICAL: glade_project_push_progress: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6503 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6503 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6504 GladeUI[ 2]: CRITICAL: glade_project_push_progress: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6504 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6504 GladeUI[ 2]: CRITICAL: glade_project_push_progress: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6505 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6505 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6505 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6505 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6509 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6509 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6509 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6510 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6510 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6510 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6510 GladeUI[ 2]: CRITICAL: glade_project_new_widget_name: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6513 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6514 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6514 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6514 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6518 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6518 GladeUI[ 2]: CRITICAL: glade_property_read: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6521 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6521 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6521 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6521 GladeUI[ 2]: CRITICAL: glade_project_load_cancelled: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6521 GladeUI[ 2]: CRITICAL: glade_project_new_widget_name: assertion 'GLADE_IS_PROJECT (project)' failed
09:27:02.6530 GLib-GObject[ 2]: ERROR: cannot create instance of abstract (non-instantiatable) type 'GtkWidget'
Works in Glade and in compiled app. Tested in Builder Nightly, Fedora 31 (X11).