This may be more applicable to those of you playing villains, but with some missions having been revamped in the past few issues, I thought it worth bringing to everyone's attention.

There are some missions (especially in CoV) in which you are asked to prevent a boss from escaping in addition to doing a few other tasks.  Recently, I was involved in a mission where we were on the third floor of a building.  The boss got as far as the elevator (down to a sliver of health) and we were in hot pursuit.  Once he hit the door of the elevator, however, the mission failed. 

If this happened to you, it IS a bug in the mission.  Petition it – but do NOT go speak to your contact and clear out the mission.  If you do, the GMs will be unable to take corrective action (i.e., give you a mission bonus.)

~Elizabeth