Yes, it is that I make also. Regrettably, some players do not accept it and we oblige to fill automatically the squares. When one knows the final result and when the reflection does not exist any more, it is not very pleasant.
For my part, I do not agree to replay with opponents who have a practice so.

When territories belonging to the two players are closed, it is possible to know who won by counting the number of squares which remain free.
Nevertheless, I notice that certain players who are losing, continue to play instead of resigning itself.
What you think of it?