Time: 9:55 PM EST
Frequency: Once so far
World name: Cactuar
Character name: Sarina Vykor
Retainer name: N/A
NPC name: N/A
Monster name: N/A
Class/Level: AST / 60
Party or solo: Party, 8-man
In-game time: 5 AM
Area and coordinates: Thornmarch (Hard)
Housing: N/A
Steps:
1. Queue up for duty, in-progress selected.
2. Duty pops, accept.
3. Get placed into separate party within the party, unsure if other members see it this way.

I saw there was another thread similar to this in the accepted bugs, but was unsure if SE knew that the bug wasn't just for Midas, and is for other dungeons as well. Apologies if this winds up as a duplicate bug.

Screenshot 1
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Screenshot 4