Unedit nodes early when closing scene tab

editor/editor_node.cpp

@@ -3435,6 +3435,9 @@ bool EditorNode::is_addon_plugin_enabled(const String &p_addon) const {
 }
 
 void EditorNode::_remove_edited_scene(bool p_change_tab) {
+	// When scene gets closed no node is edited anymore, so make sure the editors are notified before nodes are freed.
+	hide_unused_editors(SceneTreeDock::get_singleton());
+
 	int new_index = editor_data.get_edited_scene();
 	int old_index = new_index;