Demon Hunter ability Fel Rush, will some times fail to do the actual dash movement mechanic. The sound, damage, and particle animation trigger correctly.
I have disabled all of my addons to test this, it is NOT an addon issue.
Furthermore, occasionally, Fel Rush also fails to continue a character’s momentum in mid-air, rush ends and the DH comes to a dead stop, mid-air, as if they hit a wall or some hidden bounding volume.
For whatever stupid reason, WoW is not letting me open a ticket for support in-game, so my last effort is to put it on the forum with hopes someone will actually do something about this garbage.