When making a custom lootr chest ("/lootr custom" while standing on a chest), whenever a player takes an item out of the chest, the item disappears for all players. If they put an item in the chest, it doesn't appear for any players.

Okay, it took me a while, but I finally tracked down the issue. This should be fixed in the latest release on CurseForge (0.0.6+).

Bugger, I swear I fixed this, let me look into it.