Ok I thought this had happened to me, I made a post and everything, but I have deleted it because I realized that I actually dropped the quest when I was trying to leave a dungeon, totally my bad, I was at fault

but, the journal and the duty log do look very similar, and the abandon button is in the same place, so if someone is on auto pilot, just opening the menu to click the abandon button they likely don't realize what they have done until its too late

moral of they story, slow down and read stuff before you click it [or maybe change the look of the duty log? (lol j/k) ]