Gliding Mounts

I'm not really sure how else to describe the issue. When in Lions Arch a few minutes ago, I went to do a jump on my raptor, but instead of landing normally it just hovered in the air for a good distance and slowly descended. It was basically gliding, and I thought at first it was lag related but the problem persisted even after the area fully loaded.The problem occurred on the Raptor, Springer, and Jackal. Skimmer was unaffected.

Relogging seems to have fixed it but I have no idea what might have triggered the weird slow descending/gliding.