- Bring out camera.
- Talk to NPC. (non store attendant)
The dialog UI should pop up, allowing you to close the dialog with the ‘Goodbye’ button.
Due to the fact that the camera hides all UI elements you cannot exit the dialog until you change the item in your hand or holster the camera.
With Camera out
Without Camera out
Additional note: The ‘Esc’ doesn’t close the dialog as you think it would.