I can tell you it wasn't fun

My version of issue was that when I took gryphon taxi, I wasn't riding at a normal mount speed, but couldn't control my movement as if I'm on the taxi. I clicked off the buffs and the gryphon disappeared, rendering me fly/swim in the air, progressing slowly to my wow gold destination.... I can tell you it wasn't fun.

However, since I haven't tried the mount again (it wasn't mine, some guildie had the hitching post), I don't know if it's a recurring stuff or just my unlucky glitch.