MC 1.16.5
Forge 36.1.13
Assorted Decor 2.0.10

https://gist.github.com/judicius/2f110af96e349873166045eb6dd12903

Player placed a colorizer block and was disconnected with "not closed container" error.
New player went to destroy colorizer block and was DC'd as well.

Issue doesn't seem to happen in an SP world just on a server.

Do you happen to know of any other mods that may be conflicting?
I am unable to reproduce this with just Assorted Decor.

Just updated the pack with a bunch of mod updates as well and now there is no problem so i'm going to close this and hope it's all good.