I built a new PC and wanted to test Minecraft. Unfortunately, if I'm looking at a cavern wall (of stone), I can notice rings of circles in my view. These are different sizes and seem to represent different shades of the shadow. I don't recall seeing this before. I have the latest drivers for my GTX 1660 Ti. I tried uninstalling and then reinstalling the game, which didn't fix it. I also tried it on another computer and noticed the same effect. I also tried it with the latest snapshot 19w42a. I also tried running the game as an administrator. I also tired to disable full screen enhancements in the properties section of the exe. I tested this in the Windows 10 version and it looks just fine. I'm pretty sure I also tried this using Optifine, but again the same result. It's difficult for me to find this issue being reported and since it happened on two different computers that I could try, I figured I'd report it as a bug.

I've attached two screenshots that show this issue, which you may need to open in a fullscreen window to be able to see. I've also attached two screenshots of my video settings within the game. My Nvidia Control Panel settings are set to default, except I turned on Vsync and changed power mode to maximum performance. These two settings are set "globally." I've also attached a DxDiag.txt, 

I would like to send you a zip file containing the world I'm using as I'm looking at the wall in the screenshot, but the zip exceeds the max size limit.

I have posted this issue on the forum, but haven't received any helpful support.

Thank you for your time and support!