Running Display Fusion 11.0 Beta and also was on prior version. Windows 11 Pro 23H2

Seems Windows 11 screen saver/power screen fails when I have display fusion up. If I exit display fusion my screen saver kicks in and also my screens power off.
This actually began some time last November and I thought it was my system, so I did a fresh Windows 11 install and started again. And now it is the same thing. But I have isolated it down to display fusion.

Thnx
Bill