The following in-game bug has been reported to DBG:
This ability may not go off if the terrain between you and your target uneven in any way, but will still cost power and trigger the recast timer.
This ability may teleport you beneath the world if used on an incline/hill (it's uncommon, but happens)
Be careful using this spell in the Overrealm zones - if the above bug occurs, you will die when you get teleported under the world rather than respawn at the safe spot unharmed