There are going to be glitches when dealing with something as immense and complex as an online game. It’s nearly inevitable. Things will not be properly reflected in tooltips, clipping will go wrong, players will fall through the world, a boss in a major bit of content can be exploited for a trivially easy win. That last one has hit The Division in the Falcon Lost incursion, but players can rest assured that players who knowingly exploited the glitch will be punished.
No details of said punishment have yet been released, although it seems likely that temporary bans will be the route chosen. There’s even footage of a community manager clearing the boss on a stream with a player accused by other community members of exploiting the glitch. Keep your eyes open for more information as Ubisoft decides how to deal with the players who managed to pick up rewards far more easily than intended.