After VM upgrade 15.3 -> 15.6 clipboard & auto-resize desktop stopped working

[gnyers]

Hi,

To keep it brief:

1. openSUSE 15.6 (laptop) + Libvirt managed VM also openSUSE 15.6 using Spice + virt-viewer to access KDE desktop (on Xorg, b/c Wayland does not work )
2. before VM upgrade (from 15.3 to 15.6) clipboard and keyboard layout sharing with host and auto-resize VM screeen (when virt-viewer window changed) worked OK.
3. after upgrade VM to 15.6 it does not
4. note: VM definition did not change and still has the QXL video + Spice monitor and channel virt HW.
5. from what troubleshooting it seems like spice-vdagent auto-starts together with KDE, but after a few minutes it just exists without any error.
6. BUT: starting when spice-vdagent manually in KDE, the clipboard sharing works, yet auto-resize and keyboard-layout sharing does not.
7. also: a few minutes after manually starting spice-vdagent hogs 100% of the CPU. An strace of the process shows several of these calls per sec:

poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6, events=POLLIN}, {fd=11, events=POLLIN}, {fd=13, events=POLLIN}, {fd=14, events=POLLIN}], 6, -1) = 1 ([{fd=14, revents=POLLNVAL}])
recvmsg(5, {msg_namelen=0}, 0)          = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(5, {msg_namelen=0}, 0)          = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=4, events=POLLIN}, {fd=5, events=POLLIN}, {fd=6, events=POLLIN}, {fd=11, events=POLLIN}, {fd=13, events=POLLIN}, {fd=14, events=POLLIN}], 6, -1) = 1 ([{fd=14, revents=POLLNVAL}])
recvmsg(5, {msg_namelen=0}, 0)          = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(5, {msg_namelen=0}, 0)          = -1 EAGAIN (Resource temporarily unavailable)
^Cstrace: Process 3267 detached

Appreciate any ideas as to how to fix this.

Regards,
Gábor