Starting in 1.14.20 I have had several of the players chest start turning invisible. When they are invisible they cannot be opened. Players have to destroy the chest (which also destroys all items inside it) and place it again in order to be able to see / use the chest again. This is starting to effect several players, as well as sometimes chests are not closing.

The attached pictures shows the problem there should be several chests in the areas that are seen, you can see them highlighted but no chest and they cannot be opened.

I updated to the latest hotfix 1.14.21 which seems the chests are still invisible and inaccessible.