Switch: Vibration not working?

[SylphiaWindy]

Compiled switch-sdl2-2.0.14-dev with latest libnx, but I cannot make vibration working.
Is there any 'official' demo this on switch?

Confirmed vibration is working using this demo(libnx):
https://github.com/switchbrew/switch-examples/tree/master/hid/vibration