I don’t know if it affects all races for Warlocks but I feel that the shards that float above your head for the Glyphs of Floating, Ember and Fel-Touched shards float too low and tend to clip into some of the helms and shoulder gear.
When your on a mount they actually float higher up and look much better. I feel that the height that they are at when your on a mount is what they should be at when your not on a mount.
This would allow them to not clip into your helm or shoulder gear.