I have noticed over the last 6 months that the "A" button on my Xbox One controller has no function within the DEOvr app on my PC. It is very intermittent and sometimes I have to restart the DEO app a few times to get it to work, lately it has been more often. I have confirmed my A button on my Xbox One wireless controller is working with other games.
I did notice today that after I exited a random game that requires the Xbox controller, then opened the DEO app, the A button started working again. This is the Global (Main) button so it doesnt seem like I can map it to another button. Note: The A button will work to choose a video on the video menu, and it will only work to open and close the UI that shows the pause icon,play icon, minutes left in video etc. I cannot use the A button the choose anything else on the UI.
I am running the latest Windows 10 64bit, Bigscreen Beyond headset, also had the same issue with Windows MR Samsung Odyssey headset too.
Any help would be greatly appreciated.