Guild Wars 2

First of I love the adventure box! I’m on my last few achievements for Back to School and I can’t quite seem to get this cloud. I’ve tried approaching it from multiple directions, but it never seems to activate.

I’m I doing something wrong or is this a bug? Hopefully this helps you guys to fix it!

http://i.imgur.com/lfTVN2j.jpg
http://i.imgur.com/ZtOvtxD.jpg
http://i.imgur.com/7WHxAh5.jpg
http://i.imgur.com/MhS7gYd.jpg

It’s just bugged I guess, or maybe it’s intended like that. You should be able to get your achievement without it tho, just go up the ramp on the left. There’s an arrow pointing to it there.
I sent a report about it in game a few days ago, nothing changed though.

Thanks for the advice! I just got the achievement ^^ thought I’d mention it anyways.