Date & Time: April 2nd, 7:50 PM local time
Frequency: Happened on one alt so far.
World name: Leviathan
Character name: Lho'a Polaali
Class/Level: WHM 82
Party or solo: Solo
Area and coordinates: Old Gridania (10.3, 6.8)
Steps:
1. Pick up the XVI Collab quest
2. Progress through it to "The Path Infernal" quest
3. Combat Ifrit
4. (Possibly related) skip the cutscene following the combat
5. Re-spawn in Old Gridania

Result: The quest progression didn't register in the Duty List. It still said to speak to Clive (the previous step), and when clicked on in the Duty List, the map flag provided was in Gridania.
On characters where this functioned correctly, the text changed to "Speak with the wandering minstrel at the Burning Wall" and the related flag matched.

Workaround: Open the journal. Click on the "map" button inside the journal rather than click on the Duty List. Correct objective and flag shown.