I have spotted a bug with double trapped chest,
I give you some screens with my explication, because my english is low level.
1- I put a double trapped chest
2- i turned around slowly (with double chest in my view)
3- half of double chest disappeared
I think it's a visual bug.
This ticket is invalid as it relates to a modded or 3rd party client/server.
Any non-standard client/server build needs to be taken up with the appropriate team, not Mojang.
Any plugin issues need to be addressed to the plugin creator.
This site is for addressing issues related to the base unmodded MineCraft.