Yikes! I'm a bit worried about this happening to mine. I'm actually getting rid of mine in a few weeks to pick up a Pixel 5 instead...hopefully nothing happens in the mean time. I've heard a lot of people are having this problem, especially with the ultra.
The S20 is a lemon. Once you get over the camera glass issue and if you decide to pay to get it fixed, fixed via your insurance provider if you had the phone insured or fixed from warranty (Samsung seems to be picky about who they choose to cover), you will soon find out their camera is rubbish anyway. Lots of discussion about both but for reference, here are the main threads I've been watching recently.
That second one is my thread. Yes the camera absolutely is rubbish. I'm going to do a quick comparison between the S20 and Pixel 5 as well before I ship out my S20 for trade in. I'll add it to that thread for reference. It's really ashame the colors are so awful on the S20. Pictures often look good, but it isn't a true representation of what you are actually looking at. Really disappointed with Samsung and they've had months to fix the software...doesn't seem like a priority though.
Mine shattered after being in my pocket I had it out had it wasnt broken no issues I put it in my pocket drove 2 min away got out to take some photos and the glass is shattered, didnt drop didnt sit on anything weird that even could hurt the glass.