Interesting bug I’ve found relating to Warlock’s Eye of Kilrogg spell.
While casting the spell, if you use right mouse button to spin your character, the eye will immediately despawn (this may be related to the Hunter Feign Death bug that Blizzard is looking at) but this is not the reason I’m making this post.
If your character was mid spin when the cast finished, after the Eye despawns, your character will be completely stuck; you cannot spin, jump, or move at all. You can cast spells, open your bags, look at your character pane, etc. however nothing you do will un-freeze you. A UI reload does not fix it, hearthing home does not fix it, using the character stuck graveyard teleport does not fix it, and getting rezzed will also not fix it, you’ll just be stuck paralyzed in a new location. The only fix is to log out and log back in, or exit the client and re-launch. I have been able to repeat this bug every time I tried it.