When I logged in to my realm I thought all half my chests were gone.

After further investigation it turned out that all normal chests were invisible.

It doesn't matter if they are placed down or in my inventory. It's always invisible.

Trapped chests are not affected.

All items are still inside and I am still able to interact with my chests.

EDIT 1: I tested it in single player and all chest textures are still gone. Hit boxes are still there.

EDIT 2: After restarting the game all textures came back. I am not able to replicate this issue.