Tested with same worldgen datapacks in Singleplayer world, grave works flawlessly, but with Paper server it only store experience but not items. <img width="2560" height="1347" alt="Image" src="https://github.com/user-attachments/assets/08615262-97e0-4c9a-8b60-ea9c3ac10cf9" /> <img width="2560" height="1347" alt="Image" src="https://github.com/user-attachments/assets/f65f5948-50da-4eba-a134-3a058c76ba9f" />