FB Phantom 3rd Screen

Fb4 build b321 no ext screens only USB device is a keyboard.

I noticed when moving windows within screens that windows will disappear to a phantom 3rd screen after cycling through the internal twp screens. So to fully cycle the two internal touchscreens of the FB4 requires three move commands.

I can only assume its because the H4 software is associated with the 3rd internal touchscreen on the console.

When I first received the desk, this threw me for a loop as bringing up the help window did not bring up a window and I thought it was a bug until I realized that the help window was living on the phantom screen.

Is the above, normal behavior for the FB?