Recently I've noticed that a handful of solo quests, specifically dogshit and complaining cabot, have been working sometimes, other times it gives me a message about party size and I am unable to take the quest. Additionally the machine salvage quest has been marked level 20. This has only happened recently, perhaps due to the challenge rating being marked on some quests? I am unsure.
The Scavenge quest is temporarily closed off, but will be back in a completely remade and far more elaborate manner next reset. The other two bugs should be fixed... I think.
The machine salvage is still marked at lvl 20.