Sorry to borrow this thread but I also have a question on UWP recording.
In my Bandicam the UWP option is already ticked (enabled). However, no matter which game I try it with (Forza 3, Gears of War 4 etc), Bandicam's FPS counter doesn't show up.
My only workaround is to use FULL SCREEN RECORDING to record Winstore (UWP) games...