Not sure if this is considered an actual "bug" per se, but when placing a resistor, the "edit resistor" dialog box appears as expected; however, changing the values of the resistor do not save on the component. I have to close the dialog, then click on the resistor once more to change values for it take actually change on the component. It otherwise functions properly, but it took me a minute to figure out why I wasn't getting the voltage drop I expected.
I am also unable to rotate components. The wheel drags but the component remains locked in its original position. The power source and breadboard do rotate, however.