Legendary drops in general are bugged?

So I noticed this since this anniversary event started that legendary drops mostly from bosses are bugged, I kill them and I get only a specific item mostly, weapons and shield of same time seem to drop with the same annointed stat, what are the odds for that to happen unless there is something bugged, graveward dropped me same weapon with same annointed stat 3 times, and that prison warden boss dropped me 3 legendary shields with the same anointed stat… the issue seems to be mostly in eden 6 region, but bosses from other regions are bugged to I think, did you guys notice anything strange about drops after this event started ?

Also that prison warden seems to drop more legendary class mods now for some reason even more compared to force troopers event rare spawn, thats odd.