If Tools is not installed, you may have this same thing. In your existing VM, as mentioned ... update or upgrade on the VM broke Tools, probably ...
Some Win 10 Upgrade in the past broke the mouse movement on the VM. Reinstall Tools was the cure - I had to do that for many VMs. These may however be system specific and not happening to all users of Win 10. These problems are also always Feature Version or Upgrade specific.
