### Godot version

4.0.dev(2fdaf2919c03ab50f971f2d51616d4ee329d29af)

### System information

any

### Issue description

AnimationPlayer is unintentionally hidden.

https://user-images.githubusercontent.com/61938263/217088704-c1ad44d6-ef7b-4b10-b351-f9f9fa166e39.mp4


### Steps to reproduce

Select AnimationTree -> Select AnimationPlayer

### Minimal reproduction project

N/A
if (warning->is_inside_tree()) {
		warning->set_text(p_text);
		warning->set_title(p_title);
		warning->popup_centered();
	} else {
		WARN_PRINT(p_title + " " + p_text);
	}
}
void EditorNode::_copy_warning(const String &p_str) {
	DisplayServer::get_singleton()->clipboard_set(warning->get_text());
}
void EditorNode::_dock_floating_close_request(Control *p_control) {
	
	Window *window = static_cast<Window *>(p_control->get_parent()->get_parent());
	int window_slot = window->get_meta("dock_slot");
	p_control->get_parent()->remove_child(p_control);
	dock_slot[window_slot]->add_child(p_control);
	dock_slot[window_slot]->move_child(p_control, MIN((int)window->get_meta("dock_index"), dock_slot[window_slot]->get_tab_count()));
	dock_slot[window_slot]->set_current_tab(window->get_meta("dock_index"));
	dock_slot[window_slot]->set_tab_title(dock_slot[window_slot]->get_tab_idx_from_control(p_control), TTRGET(p_control->get_name()));
	window->queue_free();
	_update_dock_containers();
	floating_docks.erase(p_control);
	_edit_current();
}
void EditorNode::_dock_make_float() {