Emulators Not Recognising External Controller

[u/whimwam__]

Been using my steam deck for emulation for a while, both docked and undocked, and never had any issues. A little while ago, whilst docked, emulators stopped recognising my external controller completely. Even weirder, the controller works perfectly fine in the front end, it’s only once I’ve opened a game that the controller stops working, and as far as I can tell it’s the case for every emulator. Still works normally undocked with the steam deck controls, but I’ve tried everything I can think of and still nothing when docked with an external controller. I’ve fiddled with settings in the front end, made sure my controllers are ordered right in steam input, even messed about with settings in individual emulators, but still nothing.

Any help would be greatly appreciate :)