It seems this bug has already been noticed by others but apparently not fixed since it just happened to me today. I do not know what triggered it so I will tell all the story. I was on the skyhammer, fighting when I fell out of the cliff and died. Then, when I respawned, my camera was like trapped on the ground, like if my character was in the ground and not above. I could not move, I could just change direction of the camera. Finally, I fell down and arrived in the water below the map. Then, there was no way to come back in the fight above ground.
This is the first time it happens to me, but it is very frustrating.
Other past mentions of the bug I found:
https://www.youtube.com/watch?v=x8fOHAoz_j4
http://www.reddit.com/r/Guildwars2/comments/28ll4u/a_cool_skyhammer_bug_raising_awareness_of_why/
