In MapAtlasesAccessUtils#getAtlasFromPlayerByConfig, if the last predicate section (ie, loc#scanAll and loc#hasHotbar) both fail, the function will return 'itemStack', which is last saved to the offhand, even if it isn't the atlas. The function needs to return ItemStack.EMPTY if it does not find the atlas, but it never does if it never checks the hotbar or inventory.

The fix would be to simply return the itemStack retrieved from #getAtlasFromInventory immediately like the other predicate checks do, and then return ItemStack.EMPTY at the end of the function. This is the fix I implemented and it works fine.