Vision Guide quest severe bug

Hi.

So I recently did the quest Vision Guide (http://www.wowhead.com/quest=10525/vision-guide) without issues, though I've noticed even long after finishing the quest, sometimes when I relog my character flies through the world to where the quest starts, and then takes me on the ride of the quest. I've heard this happen to my friend who quested in Outland before me aswell, and I'm unsure whether or not this bug will stick with me through different zones in Outland or even outside of it. As it stands I'm scared to even relog because it wastes like 5 minutes and puts me in Thunderlord Stronghold.

Regards