Chests that have already been placed in world become invisible when reloading a world. Placing a new chest renders it properly, but upon reload becomes invisible. The only way to fix this right now is opening the chest and waiting a few seconds until the game renders them in.
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The fix that was mentioned by Matthew worked for me, but only on some of the chests. Im not sure if the direction matters with the fix, as I think the chests that did not get fixed were facing a different direction than that of the ones that were getting fixed. I will try to see if chests facing different directions will all load.
Dupe of MC-65874