On Dalaran Heist solo adventure I received the crowns (on the hero selection screen) indicating I had completed the heroic mode part III with rogue and priest though I have not yet done so. These were the only heroes I had not completed the mode with so I cannot say whether it was applied to other characters. Anyone else experience this?
This is a known bug. It was introduced with today’s update. Blizzard is aware, and working on a fix.
According to the post in the Known Issues list, this is a visual issue only; your progress is still tracked correctly.