I'm not sure what that really means, but it's like as if if slips off something inside the hub. Although I took my wheel off earlier to fix puncture and the wheel is slightly off center and it'as doing it much less.
You might need new springs in the driver or a new hub?
I have no idea what to do, The hub is sealed if that makes a difference. Is there anything I can do to fix this? because I won't know how to install the springs.