Lubuntu 21.04 is possible update x screensaver?

Lubuntu 21,04 use Xscreensaver 5.42.

If you use a full screen software works fine.
If you use emulators in window mode and only is used for input game controller the screensaver is enabled.

Have any fix for it ?
If not is possible fix has any another alternative to use screensaver with Lubuntu ?

Thanks for your reply.