This is a terrible major glitch that just griefs players. I was in a party with 3 other people we went through a gate. In the center there is a rocket pup that respawns, which is normal. However the blue anti-enemy safety barrier isn't rocket proof. Me and my party decided to take shelter behind the blue barrier to avoid unnecessary deaths from rockets. However the rocket from the rocket pup decided to force itself through and proceed to kill the rest of the party. Please fix this glitch.
It's not just rockets, all the FSC barriers sometimes let entire enemies get through them.
See http://forums.spiralknights.com/en/node/9733
Although I did forget to mention the rockets. :P