When a barrage hive is hit, damage done, and then timed out (or fleet killed), sometimes the barrage hive fleet would regenerate. Extensive testing first appeared to show this is a random occurrence. I was able to demonstrate this glitch and record it.
THE LEFT HIVE REGENERATES, THE RIGHT HIVE DOES NOT.
Confirmation is requested. I have watched dozens of people 2-hit by hitting the right hive first, then the left. It was of course harder to get people to agree to hit the left hive first, but a few sacrificed for the greater good.
Special thanks to JimmyJames who was the only player to willingly take the suspected bad hit while i was recording. I will post the video as soon as I figure out how.
Edit for the video (attempting youtube, hope it works fine):