So I am a currently a level 26 Dracolyte and this glitch occurs pretty often, so much so that my friends have also told me that they have experienced it before.
Basically, this glitch seems to appear sometimes whenever you:
A. Jump in quick succession then use any wings with a glide value of 100 (Seems to be more frequent with the adepts wings)
B. ride a flying mount (like a dragon) when landing on bouncepads
C. pressing down while in an updraft then immediately pressing up when you get out of the updrafts range (either by going too high or by just flying out of range)