No access or action via the cursor within the VM console

[gps57]

Hello,
I updated to 4.3.3. and thus also to Virtualization Station 3
My previous VMs are working and so I can call and start my VM with Win10
All is working fine when I access the VM via my MAC using e.g. Chrome as browser.
When using my PC (running Win 10) to access via Chrome as well I can fully operate within the NAS environment and even start the Virtualization Station and fire up my VM, but my cursor activities are now not accepted or transferred within the VM console. Means I see the desktop of my VM but cannot take any actions here to start any program etc. as the selection via mouse / cursor does not work.
I'm currently a bit clueless, as the same VM works absolutely normal when accessing it via the MAC.
Does anyone have any idea what might causing this behavior and how to fix it?
Many thanks in advance.

[igdirl]

same problem