I can't see an option for it in virt-manager so can't fully confirm (because I have no time to create a VM to verify for you).
Either you're unaware of Qemu's keyboard shortcut to contain the pointer ("Ctrl-Alt Toggle mouse and keyboard grab." [1]), or your VM is defaulting to -usbdevice tablet when you want -usbdevice mouse, or you need both.
Put another way, this is probably either user error or lack of configuration in virt-manager. So at most it's a virt-manager bug.
I can't see an option for it in virt-manager so can't fully confirm (because I have no time to create a VM to verify for you).
Either you're unaware of Qemu's keyboard shortcut to contain the pointer ("Ctrl-Alt Toggle mouse and keyboard grab." [1]), or your VM is defaulting to -usbdevice tablet when you want -usbdevice mouse, or you need both.
Put another way, this is probably either user error or lack of configuration in virt-manager. So at most it's a virt-manager bug.
[1] https:/ /qemu.weilnetz. de/doc/ qemu-doc. html#pcsys_ 005fkeys