Heads are often painted black, and items dropped into the world are frequently surrounded by a flat panel of backdrop color.

This has also been mentioned in issue #666, and issue #694, both which were closed with only the mention that one was a duplicate reference to the issue.

Minecraft 1.16.5
Rats 7.2.0-1.16.5
Citadel 1.7.3-1.16.5
Optifine HD U G8
Forge 36.2.0

Why was this issue closed? There are no notes. Was the issue fixed? If so, can you post a link to the release of the newest version?