#6 Game Play Configuration Pushbuttons Don't Work Correctly

[Anonymous]

When modifying preferences, I run into trouble on the "Game Play" tab. The three "validate moves" radio buttons don't work as I imagine.

First, I can only turn each one on. When I click them again they don't turn off.

Second, it seems that if the "do not validate moves" button is on, I shouldn't be able to select the others.

Third, it seems that only one of the last two should be on at one time.