Yes that is real bag, although would be a good place for popping the fake white bag.
The White Bag Thread
Spixer
#7066
Unfortunately quests are bugged for some people so you have to wait until “tomorrow” so around 2 hours.
Cammm
#7072
Yeah I got it first run of bella, and there was one the other 3 runs I was in, so it seems fairly common.
Had it for ~45 minutes but I assume someone got within a few minutes of it even being implemented.