Using version LMD-1.19.x-bukkit-paper-1.0.0 on a Paper server causes zombies holding items and sitting in boats to dupe what they're holding when you unload the chunk they're in to trigger despawn and then come back to see them not despawned but having dropped the item in their hand while still holding that same item.
This is the error in console:
https://mclo.gs/cqPweUV
Using version LMD-1.19.x-bukkit-paper-1.0.0 on a Paper server causes zombies holding items and sitting in boats to dupe what they're holding when you unload the chunk they're in to trigger despawn and then come back to see them not despawned but having dropped the item in their hand while still holding that same item. This is the error in console: https://mclo.gs/cqPweUV