Very weird sounding, I would definitely suggest restarting the deck if you haven’t. It’s also worth checking controller order in the three dot menu, sometimes after I’ve had a controller connected my deck controls won’t work, and it’s that the deck controls are still ranked as the 2nd, 3rd, etc controller even though no other controllers are connected. When this happens I find that most of the deck controls won’t work in most games, but randomly some parts will. Changing the deck back to the first controller slot will usually fix it.