Didn’t have time to test properly yet as I only got the lens yesterday and that was the first think I noticed. Won‘t be able to go outside during the day before the weekend.
I know exactly how to old a lens. Left hand on the lens, right hand on the camera. the problem is that, when I try to twist the zoom with my left hand, the lens rotates (the zoom ring is quit stiff) on the mount (yes, is that bad). There is no need to try to force the rotation as it happens normally when operating the zoom ring and this comes together with a metalic click. Clicks when turning left or right all the time as the lens moves and it feels like the lens is not properly attached to the body.
It is annoying and doesn’t feel safe at all. Apart from that, having this rotation happening everytime I use the zoom, might get the seal ring worn overtime which will have consequences on the lens and camera (Weather in Ireland is normally wet). This will very likely impact my ability to take pictures, never mind their quality.
Mine behaves exactly like this (includes video)
https://www.dpreview.com/forums/thread/4519590
I would not say this is normal...