When both BSB and WorldGuard are installed on a server, and a player has the permission to use the right-click feature of BSB and /stack from WorldGuard, any items inside the shulkers are duped into all shulkers in the stack. This includes items already in the shulker, or any items placed inside while they are stacked. This dupe was happening to ALL items in the shulker when we reproduced this. I did not try it with different items in multiple shulkers for fear of a crash, though that may also be possible.
For informative purposes:
BSB version: 3.1.3
Paper version: 1.18.2-335
Worldguard version: 7.0.7
When both BSB and WorldGuard are installed on a server, and a player has the permission to use the right-click feature of BSB and /stack from WorldGuard, any items inside the shulkers are duped into all shulkers in the stack. This includes items already in the shulker, or any items placed inside while they are stacked. This dupe was happening to ALL items in the shulker when we reproduced this. I did not try it with different items in multiple shulkers for fear of a crash, though that may also be possible.
For informative purposes:
BSB version: 3.1.3
Paper version: 1.18.2-335
Worldguard version: 7.0.7