Qemu-kvm KDE VM steels my mouse

[ToddAndMargo]

Hi All,

Host
  Fedora 34
  Xfce 4.14
  qemu-kvm-5.2.0-8.fc34.x86_64

Guest:
  Fedora-KDE-Live-x86_64-34-1.2.iso

Problem:  my mouse is confined to the VM, unless
I throw <ctrl><alt><L>.  But when I do so, KDE also
logs me out and I have to log back into KDE
every time and my mouse gets re-confined.

This behavior is unique to KDE's VM, as it does not
do it on Windows 7, Windows 10, Windows 11,
Fedora 34 Xfce, or (weird old) Fedora Gnome VM's.

How do I stop this behavior with KDE?   I need to mouse
not to be confined.


Many thanks,
-T