Quote Originally Posted by Toranja View Post
No. It is a bug. I know what he is talking about.

My group encountered the same problem once. I think we just wiped and did the fight again.
In a way it is a bug, but the bug is probably based on 'intended' mechanics.

SE probably wanted to 'force' you to kill adds by stopping DPS on the Colossus until all adds are killed. However, once you DO kill the adds... the Colossus will 'stay' at the same HP and the only way to fix it is to wipe and restart. If your DPS is 'too fast' (very common in all of these 'speed runs, great gear only' groups), you'll need to switch to the adds and kill them before trying to burn the boss or you'll forced it to glitch like that.