I don't have this, but if my character is at the edge of a cliff in game (while not on a flying mount), I will have a physical reaction to it.
It's less of a problem on my rogue, because I have my fake-a-soulshape macro (Potion of Gusts + Ardenweald toy) and several slow-fall toys on her bars, and she can also shadowstep to safety if there's any mobs down below, which is probably part of why I never play anything else. I think it's also been mitigated by the number of times I purposely jumped off that tower in Valdrakken and hit the soulshape macro right before I went splat.