Not entirely sure if this is a glitch or not, but I was just playing on my lock and my felguard aggroed a few extra mobs and died. Now, from demonic rebirth's effect I should have been able to resummon him instantly. So I hit my keybind for summon felguard, and i begin doing the 6 second cast for the summon. I assumed it was a one time glitch and then the same thing happened again. Anyone else having this problem?
Also, It wasn't on cooldown, because it hasn't procced for me before.