Shrapnels of new shard bombs can go through barriers that should stop all bullets and prevent monsters from passing it. All other bullets, charges are stopping on barrier.
Shrapnels of new bombs can go through and explode on other side. This can lead to exploits where player hides behind barrier and kills monsters which cant cross barier.
The shrapnels go through but they deal no damage. The damage originates from where the bomb was placed, just like with Dark Retribution.
I can confirm
Put it close enough to a ghost barrier(right beside, or in), and the shard will occasionally spawn on the other side, dealing damage and knock-back since it counts as a separate bomb
Just as Stingz said, they deal damage. And its not occasionally, when you find right spot they spawn with 100% rate of sucess.
My bad, then! I tried it in ATH and I guess the damage just didn't occur because of the shards pitiful range.
Recorded this bug:
http://youtu.be/hjpMnyvkm8E
Also it happens in every place where is that force field/gate, for example FSC where player can use this exploit to kill enemies from safe place.
And ironcially they dont go thru small obstacles that guns run over. Try the pots room in training hall.