TheRealDannyyy To be clearer, what I found is this:
✔️ When a controller (e.g. PS4 or Xbone controller) is plugged in with USB, rumble works!
❌ When a controller (e.g. PS4 or Xbone controller) is using BlueTooth, input will work normally, but rumble does NOT work!
This is true for both Chrome and Construct 3 NWJS.
I don't know if this is a bug or it's just that rumble is impossible with BlueTooth on Windows.
Ok that clears things up. Probably a bug and therefor worth reporting.
I hope you don't mind me tagging you later, if there are more questions from Chromium's side about this.
(Will provide the link when the issue is up.)