Rumble emulation suddenly not working unless I use it wired

[Reonu]

Rumble used to work fine on my Xbox One controller, connected wirelessly via the official receiver (this one)


But all of a sudden it isn't working at all? I test the vibration with both Motor L and Motor R and it just doesn't work, it does nothing.

I'm using Windows 10 and the latest dev version. Any ideas?

EDIT:
If I connect the controller wired, rumble works fine. But wirelessly, it doesn't. Please note that I'm not connecting it via Bluetooth but with the *official* adapter, since I have one of the old controllers with no bluetooth support. It's a different protocol with more features (supports multiple controllers at the same time etc)