So I used /effect give @a health_boost 1 255 which is supposed to give a LOT of hearts for 1 second as a joke with my friends on my minecraft server (I was at spectator mode at the time). Then my friend said the health bar stayed even after duration finished. Summary: I tried many things (Milk, re-effecting myself, respawning, relogging to the server, respawning with KeepInventory, etc) but nothing works. Help please