While doing Veteran Asylum Sanctorium, beating the second boss, we pulled him to 50% health when he suddenly decided to respawn in front of us. We did nothing wrong that could've caused it. It happened two times. I'm taking this bug to your attention ZOS because we were going for score run, we had a very very good start, but this bug made it fail! You need to try to fix this as soon as possible so other people who try to go score run don't loose their chances to get Asylum perfected weapons...
Another thing that happened: we ran away from boss because he aggro'ed by accident by he kept following our tank all the way down to where the first boss was, without respawing or anything!