I have noticed a lot of folks have been having issues with dials on various models. I have not read of an issue with the E-M5 MK II yet. Have they finally fixed this issue?
It might be too early to tell, but I have not had any issues with my EM5 Mk II dials. Then again, I didn't have any with my OG EM5 either. I've not heard of any reports anywhere else either...so fingers crossed!!
I, too, have had no problems with parts falling off either my E-M5 (>13k clicks) or E-M5 Mk II (>4k clicks). I don't baby them.
My dial failed right out of the box when I first took delivery of my EM-5ii back in February. The vendor I used swapped it out for a new camera.