From the weekly update...
"Players are reporting less ammunition than expected dropping in specific PvE encounters. We're investigating and looking at data."
[what a surprise! Once again if too much was dropping that would of been patched already]
"Universal Remote (a Primary Weapon) is decrypting from Special Weapon Engrams. Investment designers are looking into why this Exotic Shotgun has forgotten its role."
[takes skill to break shit that was working just fine]
"Ghosts are dropping as rewards for Nightfall Strikes with lower Light than expected. A fix is being planned for a future deployment."
[future deployment means 2021, so zero point in doing NFs still, also seen people getting 1 sc, buts that's prob by design]
"Cryptarch Rank Up packages are granting Year One Engrams. We also hope to fix this in a future deployment."
[wow, just wow...]
I would respectfully suggest you sack your QA team as bugs like this shouldn't make it into production on an 18+month old game.
Why do activities and rank up when your shitty code and RNG will suck the fun out...still.