I was doing a PQI - Halfling Bloodmage Miser in the Labyrinth. I clicked a random square in exploration (NOT a shop) and I got a warning that I failed the PQI. I checked my badges, Miser was marked with the "timer" symbol, not the red X, though the PQI mission was marked with an X. I decided to go through with it anyhow, got the miser badge, and I got the PQI reward at the end anyways.
I was doing a Warlord run on Hobbler's Hold (the only easy map) and finished it. For whatever reason, it didn't register as me having completed it with that class. I beat it a second time and it registered fine. I've had a few random instances like this before on various maps with different classes. Thankfully, I've never had it happen on a Vicious dungeon victory for I'd be a bit miffed.