I think this is a bug in the interaction between Villa & Way of the Mole
Set up a game with Way of the Mole and Villa.
Play a hand
Buy a Villa which goes to you hand and so you go back to the action phase
Play the Villa as Way of the Mole giving you +1 Action and +3 cards
Play your hand until you are ready to autoplay your treasures
Auto play the treasures
Actual:
Your round ends without being able to buy anything
Expected:
You should be able to buy something
In fact you should be able to keep going indefinitely while there are Villas available to buy.
Set up a game with Way of the Mole and Villa.
Play a hand
Buy a Villa which goes to you hand and so you go back to the action phase
Play the Villa as Way of the Mole giving you +1 Action and +3 cards
Play your hand until you are ready to autoplay your treasures
Auto play the treasures
Actual:
Your round ends without being able to buy anything
Expected:
You should be able to buy something
In fact you should be able to keep going indefinitely while there are Villas available to buy.