Aforementioned fireteam dude here; we also encountered this issue while I was assisting in completing "The Forsaken" Campaign, we had acquired the quest requiring us to complete several bounties (5 Spider Bounties) however we had to do approximately 8 bounties in total to finally finish the quest step. The Glimmer bounties counted for 2 and 3 for us respectively, then we had to continue with other bounties. Although the gameplay is still great and has maintained its quality over time, regrinding several bounties to power through the campaign was most unpleasant. My best guess is there was a disconnect in communication between rapidly turning in bounties and the D2 Servers counting the completion for the quest. This however does not correlate with the Crucible issue. P.s, We sit next to each other while gaming, so I can vouch for witnessing these issues. We also tried the return to orbit trick that seems to help with other quest completion issues. Cheers!