When using /difficulty I have problems were the difficultys change from time to time, like, it wont stay on difficulty 2, and switch to peaceful. Also I find that sometimes my hunger regenerates like im in peaceful, until I relog. This is for realms 1.8.8. Thanks!
I am able to replicate this same bug in normal (client-server) multiplayer in Minecraft 16w43a, eating still works regardless of the visual state of the hunger bar