Hey,
So I just upgraded my virtual box to version 5 (from 4). But for some reason ever since the upgrade, my host key has stopped working. When I press the host key I can see the icon at the bottom right showing it was pressed, but the guest OS is not release. If I type, the guest OS can still detect my key strokes.
Using Ubuntu as Guest (tried on various versions including ubuntu 14.04 LTS, 14.10, 15.10).
Tried to change the host key. It seemed to work initially but not anymore.
Any suggestions?
Thanks in advance.