Mage's Fury has height restriction?

Frozstee

So this is something I have been noticing over the past few days, in that, I can't cast Endless Fury on targets that have a low ceiling above them. Has happened a few times in dungeons where I will cast it and nothing happens, while every other spell is working perfectly. Thought at first maybe it was just lag hitting me because it wasn't always causing an issue, so I found a mob that was backed into a corner in a dungeon. I don't quite remember which AD cave I was in but the scamp was backed up to the wall, and there was a low stone overhang... I tried to cast Fury a good ten times and could not hit the scamp, so Lightning Splash it was.
Has this ever happened to anyone else? Found it really odd and a bit annoying, but I mean, go figure I can't create a lightning storm inside of a cave.