It happens to me too. I closed all the other location and killed all 3 villains at vault of greed. However, the game asked me to move my heroes to other locations, then have a green arrow (to proceed/confirm) on my current active hero but have no effect on pressing the arrow. I just hang on with the stuck screen right now as this was my 3rd times to run this scenario.
What device type are you on? iPhone 6 plus
What version of the OS are you running? 10.0.2
What model is the device? iPhone 6 plus
What is your PFID#? 58EEF08633A98906
Is pass & play on? No
Is permadeath on? No
Tutorial, Story Mode, or Quest Mode? Story mode
Characters in Party: Valeros, Merisiel, Ezren & Kyra
Location of each character - all 4 in vault of greed when killing villains, then Meri, Ez and Kyra were forced to move to other locations after the last villain was killed
Turn Order: Valeros (active hero who killed the last villain), Merisiel, Ezren & Kyra
Scenario & Scenario Difficulty. 5-4, Normal
What card was encountered when the issue occurred? Forgot which villain I killed last, possibly Jordimandus
Did the issue occur on the first explore or a subsequent explore? If subsequent, what card did you last encounter? What was its resolution? First
Did other characters aid the check? What did they use to aid it? Forgot, maybe a bow or a blessing
Was the encounter a Horde? No
Hope it would help the developers to fix the bug.