I noticed that a few plugins I use ignore the offhand slot (when saving/restoring inventory for a minigame, or just for /clearinventory). Now, the authors of the plugins have issues with finding out what causes it so I thought that maybe it's in Spigot somehow. I can manipulate the offhand inventory slot using the GUI by drag and drop, and am also able to change it using the vanilla command /replaceitem entity @p slot.weapon.offhand [id] but the plugins don't work with it. I just need a confirmation that Spigot 1.11 has full support of the offhand slot so that plugins can work with it. Thanks!