### Godot version

2992ffd25523cb8b3e0ef1b873c40115b8940178

### System information

Windows 10

### Issue description

Godot crashes randomly within a few seconds after project start when moving with the mouse.

![win_err](https://github.com/godotengine/godot/assets/52464204/1da28596-d95b-40f3-b32f-12219ec02c5d)

Started after recent merge of https://github.com/godotengine/godot/pull/67791.
I can confirm that reverting the pr fixes the crashes.

### Steps to reproduce

see desc

### Minimal reproduction project

N/A
_THREAD_SAFE_METHOD_
	WindowID id = _create_window(p_mode, p_vsync_mode, p_flags, p_rect);
	for (int i = 0; i < WINDOW_FLAG_MAX; i++) {
		if (p_flags & (1 << i)) {
			window_set_flag(WindowFlags(i), true, id);
		}
	}
	return id;
}
void DisplayServerX11::show_window(WindowID p_id) {
	_THREAD_SAFE_METHOD_
	const WindowData &wd = windows[p_id];
	popup_open(p_id);
	DEBUG_LOG_X11("show_window: %lu (%u) \n", wd.x11_window, p_id);
	XMapWindow(x11_display, wd.x11_window);
	XSync(x11_display, False);
	_validate_mode_on_map(p_id);
}
void DisplayServerX11::delete_sub_window(WindowID p_id) {
	_THREAD_SAFE_METHOD_
	ERR_FAIL_COND(!windows.has(p_id));
	ERR_FAIL_COND_MSG(p_id == MAIN_WINDOW_ID, "Main window can't be deleted");
	popup_close(p_id);
	WindowData &wd = windows[p_id];
	DEBUG_LOG_X11("delete_sub_window: %lu (%u) \n", wd.x11_window, p_id);
	while (wd.transient_children.size()) {
		window_set_transient(*wd.transient_children.begin(), INVALID_WINDOW_ID);
	}
	if (wd.transient_parent != INVALID_WINDOW_ID) {