When I connect to Hyper-V from Hyper-V manager on Windows 10 Pro I check the box to use all monitors, and it loads as expected. When I minimize that windows to do something in the Host and the maximize it again it stays within one display (the laptop's display) and does not expand to the other monitors. Additionally, it shows scrollbars and shows all four screens within the single scrollable window.
I did not have this problem on my previous windows 10 laptop so I expect it is something I can resolve through settings or configuration. Can you help?