Hello, this small QOL update added the ability for the plugin to adhere to the gamerule:
/gamerule doTileDrops (when it is set to false Shulker Box items will not drop when either broken by a player in survival mode, or the environment. (It will still drop in creative if the Shulker Box contains items)
Also visually, particles will now show when a Shulker Box is broken (corresponding to the color of it!).