I am experiencing the same thing. What I am doing to work around is to move the toggle from F1 to F5 and then use the mouse to click the 'build' button, and timing pressing F5 and the mouse button. Takes a few tries but does work.
I'd like to add that the Invisible function is also not working. It too is a 'play' button and not a toggle. Really useful when you're helplessly lost in a cave and just want to 'turn the radio down'. 😁