What went wrong: Quest to collect crabmeat in The Coral Pools stopped counting at 2/5. Playing Online/Multiplayer, happened for both the friend I was playing with and me.
Quest was accepted when a few crabs hat already been killed, all eggs could be picked up as intended, just the counter for the meat didn’t rise anymore after reaching 2.
Upon visiting the area again a day later (to finish the quest), it automatically completed and we were able to turn it in.
Same just happened to me at 4/5. Went to sleep and can’t see the quest anymore. I have a yellow quest marker in the area, but no quest to complete, when I enter the area.
Same, stopped registering at 1/5. Left the area, waited till I was sure it would reset to go in and have another go. Went in and it completed on entry. But I believe this bug has been around for years as I now remember it happening the last time I played which was around a year ago.