Just some feedback, not complaining.
For me the refocus feature does not work when my cursor is over a popout panel, it only works when either the panel is touched when I have touch capability enabled, or when I click on a panel when touch is not enabled. Simply having the cursor hovering over a popout panel does not refocus and I lose control of the aircraft.
I am using Spacedesk and popping out the Cessna 172 PFD and MFD to two separate Android tablets. with panel touch capability off for each as the C172 MFD and PFD popouts have no touch functions.
I have the Refocus Game Window option on in settings and Automatic Game Refocus selected for each panel.
Maybe I misunderstood the feature and expected too much?