Items are gone from the chest in actuality (or at least disappear from the GUI), so we're likely failing to let the server know of the item contents changing, thusly to sync them over to the client. I'd guess this line's call to Lootr.lootrImpl.isOpen() isn't working properly or as I intended.

Happens under Forge 1.19.2 (modpack is Cisco's Fantasy Medieval RPG [Ultimate]).

Can confirm this also happens under Fabric 1.19.2, and my suspicions above were correct. More specifically, the isOpen() check checks the state of the chest lid. Problematically, the chest lid is closed server-side, meaning it's "not open", meaning we don't sync.

Fixed! Lootr should be in a fully working state again for the next beta :)