I'm connecting to VM with just virt-viewer (not using virt-manager). There is a bug T872 with similar symptoms, stating that the problem was virtio mouse. I checked xml config - only ps2 mouse is present.
Whonix 126.96.36.199.8 (fresh install, not an upgrade from previous version)
host kernel 4.20.7
Steps to reproduce:
a) Boot Whonix Workstation VM with virsh (virsh start Whonix-Workstation)
b) Connect to VM with virt-viewer. One of the following then happens:
- VM's display is completely unresponsive to mouse cursor. Restarting virt-viewer doesn't help at all.
- It is possible to click on start menu button then press Esc to hide start menu. Then VM's display becomes completely unresponsive to mouse cursor. Restarting virt-viewer doesn't help at all.
- VM's display behaves normally. This happens like 1 time out of 10 VM boots.