Host lock screen keeps activating

[oliverau]

host: windows 10

guest: lubuntu 20.04 (also with previous versions, also with ubuntu)

open-vm-tools installed

Problem: when guest is in full screen and no action is done for a while, the host lock screen timeout is triggered

Desired behavior: when guest is full screen, host lock screen timeout should not trigger.

     As an example, Chrome with youtube in fullscreen on host does not cause lock screen to trigger after some minutes

Notes:

I cannot change nor disable lock screen settings on host

guest lock screen / screen saver is not triggered

Does anybody know how to fix this behavior?

Thanks

[bellgae1]

I have this same problem too.  This only happens when the guest OS is in full screen, then the host OS (Windows 10) locks.  Otherwise, Windows 10 never locks the computer as per the Windows 10 settings.  This happens with Red Hat, Windows Fedora and Ubuntu guest OS.