Ensure that tree_exited signal really happens after tree exited, fixes #19641

scene/main/node.cpp

@@ -238,6 +238,16 @@ void Node::_propagate_enter_tree() {
 	// enter groups
 }
 
+void Node::_propagate_after_exit_tree() {
+
+	data.blocked++;
+	for (int i = 0; i < data.children.size(); i++) {
+		data.children[i]->_propagate_after_exit_tree();
+	}
+	data.blocked--;
+	emit_signal(SceneStringNames::get_singleton()->tree_exited);
+}
+
 void Node::_propagate_exit_tree() {
 
 	//block while removing children
@@ -299,8 +309,6 @@ void Node::_propagate_exit_tree() {
 	data.ready_notified = false;
 	data.tree = NULL;
 	data.depth = -1;
-
-	emit_signal(SceneStringNames::get_singleton()->tree_exited);
 }
 
 void Node::move_child(Node *p_child, int p_pos) {
@@ -1207,6 +1215,10 @@ void Node::remove_child(Node *p_child) {
 
 	// validate owner
 	p_child->_propagate_validate_owner();
+
+	if (data.inside_tree) {
+		p_child->_propagate_after_exit_tree();
+	}
 }
 
 int Node::get_child_count() const {

scene/main/node.h

@@ -166,6 +166,7 @@ private:
 	void _propagate_enter_tree();
 	void _propagate_ready();
 	void _propagate_exit_tree();
+	void _propagate_after_exit_tree();
 	void _propagate_validate_owner();
 	void _print_stray_nodes();
 	void _propagate_pause_owner(Node *p_owner);

scene/main/scene_tree.cpp

@@ -598,6 +598,7 @@ void SceneTree::finish() {
 
 	if (root) {
 		root->_set_tree(NULL);
+		root->_propagate_after_exit_tree();
 		memdelete(root); //delete root
 	}
 }