In 1.16.4 and lower i get random block overlays (no texturepacks)
Sometimes they are red or green and sometimes you can just see through the block.
I dont know why this happens.
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[media]
Hey there!
This appears to be a duplicate of MC-1794. I'd recommend reading through the moderator notice on the duplicated link for assistance on how to fix this problem. Merry Christmas!

Thanks!
Merry Christmas!