Guest (and host) OS is Windows 10.
Guest has a multi-monitor setup. Tested from 2 to 5 monitors attached. Using the native windows different wallpaper on each screen option, when connecting wallpaper is blanked. When disconnecting, only 1 screen returns wallpaper. If the same wallpaper is used on each screen, then issue does not occur on the same client.
Customer support service by UserEcho