My setup works perfectly with my old but gold RX580, the only issue is big picture: it recognize my controllers (SteamController or 8bitDo) but the buttons don’t work correctly (for example (B) doesn’t back but open a menu). I’ve tried to reset the chord or guide layout but nothing change.
Is it also wrong inside games? Steam big picture has a setting for using Nintendo navigation style buttons.
If it was just the 8BitDo I could suspect pairing mode or something, but the Steam controller has never ever behaved strangely for me.
During games it works perectly, it is only in big-picture (for both controllers).