Needing help with a multiplayer related bug in Ryan Layley's current inventory system

I followed the entire series and works mostly as intended yet I’ve found a bug where the interactions with the chest are a bit odd and I semi-understand what’s up but not how to fix it…

In the series he sets the chest up to have an item from the set-up of the bp. You launch the game and take the item out of the chest or put something in it and it saves the chest based on which player used the chest. Example now is that the stack of apples I left in the chest is only able to re-populate the chest if player 2 opens the chest, allowing it to load because its part of player 2’s inventory.

Shouldn’t we somehow set the chest upon closing back to the server and have it save as the servers items and responsibility? I feel as if we weren’t actually given enough info on a multiplayer inventory. How do we make sure only the owning player of the chest or the players team can access the chest like on the popular survival games? Where are good resources for me to expand my current knowledge on this topic?

Thanks guys and keep creating