I had something similar in wind, while flying into it. Not getting the jerk on the way back could be explained by you flying against the wind – do you recall if you it was a head wind or tail wind?
It sounds like you might already know, but just in case: that jerk can happen in high enough winds because of the tilt of the AC gets too large while flying into the wind, that it exceeds the gimbal upward angle.
However, if DJI considers it a defect, that means a free fix or AC replacement. But if you want to be sure, a sure sign that it’s a defect would be if you got the jerk with no strong winds, or during a flight with a tail wind (not head wind).
PS: I really only had it on one windy flight. I’ve had other windy flights since then, including some with high wind warnings in DJI Go 4, but no gimbal jerk. Just saying that it wasn’t a defect in my case.