I've tried to do this on my server, but any time someone closes a loot interface, it will close the Backpack interface of anyone who has one open
Not sure if you're able to do something about Backpack, maybe allowing some kind of compatibility with it?
Anyway, it would be a good config feature if you allowed this, so crates can be completely emptied when looted, and even if someone doesn't take an item out (Drops all items to the floor and despawns the crate)
Can we get the ability to drop items on the ground as soon as the loot interface is closed? (Also compatibility with Backpacks)
You should try to unload the plugin and check that Backpack is working