Asking this question in regards to the most up-to-date version of Steam. I use a PS4 controller on Steam (hardwired, without DS4Windows), but it always shows me Xbox/Steam button prompts. I've tried disabling all support except for Playstation (which still shows the wrong prompts), and disabling only Playstation controller support, which, obviously, renders the controller unusable.

I know we used to be able to adjust things like this via Big Picture Mode, but there's been so many updates to Steam, it seems like this isn't an option anymore.