I just finished the story quest of bringing the merfolk expedition party up on land and after exiting cutscene, I still had my fish tail and diving interface on 
Reproduction Steps:
- meet the merfolk underwater as per the quest (it was summer 22, if timing is relevant since it can be accomplished on a number of available days)
- proceed with cutscenes (I chose the 2nd dialogue option > 1st dialogue option > 2nd dialogue option)
- Complete the cutscene and reappear outside the inn
**i reset the anchor before going in the water to put it in the correct location for the objective as well if that's a factor
Game Platform: Steam (on PC)
Game Version: Build version v1.2-1240
Input Mode: PS4 Dualshock Controller
Save file attached is the save from the beginning of the day (summer 22)
