Own mistake in rB9dcae4eb17d7b. We cannot use ED_object_constraint_active_list in uiTemplateConstraints since it is dependent on mode (pose vs. object). Now get object constraints directly when use_bone_constraints is false. Note: unfortunately a derivate of this bug has made its way into 2.90.1 Maniphest Tasks: T81057 Differential Revision: https://developer.blender.org/D8989