Back button from the victory screen after a successful arrest should return to successful arrest, not back to before the arrest.
Successfully arrest a thief. Tap "yes" to say you have enough money. Then tap the "back" button.
Back button returns to the successful arrest screen.
If you click "yes," saying you have enough money to win, and then click the back button after realizing that you should have said "no," the app doesn't rewind to the "yes"/"no" screen; it takes you back before the last arrest. If you rearrest.