Random death

It happened today, around 4ish in the afternoon. I was playing Random BG with my human SH priest. The map was Arathi Basin and we just left the spawn. I was heading towards the gold mine and I was maybe 5 seconds from the flag when my character just dropped dead. Literally. I received my full health in damage with the red numbers. I looked at the combatlog, what happaned to me, but found nothing. It just said I died and my buffs faded away.
It got me really confused and tried to find an answer online, but no luck and I just want to know, this happened to someone else? Since I'm playing on Warmane this only happened to me now.

It's possibly fall damage. There are some spots in AB where you are walking normally and you receive a lot of fall damage for no apparent reason.