Similar to the Super Barrier Firepunch, I did a firepunch in an enclosed level at the top, when i hit the barrier, i didn't go up and up and up, i hung for a few seconds and then fell straight down, burning a whole all the way through the map like some sort of super duper mega bunker buster until I hit the water and died. Coincidentally, the other guy was able to finish my final worm on his next move by dropping a holy hand grenade down the chute the bug made. I was pretty much done for anyway but it was kinda weird.

It sounds like the game forgot to stop the worm from being able to dig through things when it fell down...

not new afaik.