Visually we see two separated panels/seams, or double transparent frames, when looking sideways at a door, window or trap door that is 'windowed'. See attached images. Hard to describe!
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This looks like a very similar issue toΒ MC-219985, which was fixed in 21w18a. Do you still encounter this issue in the latest snapshot?

Hello! We continue to see layers. Here's another screenshot.
[media]
This ticket is in fact a duplicate ofΒ MC-219985, since this issue has recently been reopened, due to not being fixed in 21w18a.

Thank you for your report!
We're tracking this issue in MC-219985, so this ticket is being resolved and linked as a duplicate.
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