I came across this bug when I was breaking a block in F5 and noticed something out of the corner of my eye. It appeared to be white whenever I broke it like when you put your inverted mode on. it does it whenever you don't look at the block but when in 3rd person you can see by not having the block on the side that can barely be seen. Check the video for proof. This is on a running server. Add my discord or private message me for the video (file too big).

Discord- Oops#0001