Is there any new fix or update to this error?
I am getting the same type of error with USB 3.0 PCIE controllers in 2 Windows 10 VMs, and the USB ports will be unresponsive. A Proxmox server restart will enable the USB ports again but the same...
You don't need to activate the spice driver with the qxl option if you dont want. The clipboard still works with the default display driver in noVNC with this command:-
qm set {vmid} -vga clipboard=vnc