Recently on a dedicated server, I have running players have all of a sudden been not able to get XP. It's not caused by the mending enchant. Some players have killed themselves and still had the same XP and some having their XP reset but maxing out at one. it stays at one but when you go to the enchanting table it shows that you can enchant. I've tried loading another world and seems to be fine. I have not been able to recreate the problem