The power assist went out on my Rad City 4 during a ride today, both throttle and pedal assist. Display was still on, but showed 000 watts being applied.
The only thing that I can see that might have caused this issue is what looks like a small connector that is just dangling near the crank. It is on a very short wire, so it didn't move very far, but it was rubbing on the magnetic cable sensor. Any ideas what this thing is, and if is it disconnected from something that I cannot see to connect it to?

I have a Rad City 4 (2019) and I changed out the stock handlebar for a much shorter flat bar almost immediately. Been riding it for over 3 1/2 years with the short bar. No steering or control issues at all.