Hello. I've had a Spigen clear case on my Xr since day one and even though I take it out of the case and clean it regularly I've noticed the case has marked my phone, specifically the cut out area at the back where the camera is. I wouldn't say it was a scratch but there's a mark around the camera area the same size as the camera cut out from the case and the mark isn't rubbing away when I try and clean it. Anyone else had a case mark their phone?