We have released a minor update of the program. We have recovered an old feature that allows turning pieces with a single right-click of the mouse over the piece.
That option is available in a setting in the Options Window (you can access with F3). The option is: "Right click on piece turns it".
With this not set, the right click of the mouse over the piece shows the menu of the piece but maybe for many of you it has not much use and prefer the new setting. We also made the gift puzzles to have this option already set by default for new players that may not guess the way of turning pieces.