I can't jump in the Mame core unless I have both of my gamepads

So for some reason pressing my button to jump on my DS4 does nothing in only mame games unless I also have my second controller (Xbox One) plugged in. I’ve tried deleting my rebind files and checking the controller indexes to no avail. I don’t even get why this would happen, it wasn’t like this even a week ago. I assume it’s autoconfig doing something weird. Any help would be appreciated