Reported. And in the process found a workaround. Someone else's "elderly" bug report got me trying all sorts of stuff and eventually finding several actions that would work.
If I move the selected frame, the "Selected" option becomes available. Not something every user might find.
It took me an hour of fiddling around to come up with a simple workaround. The common denominator was getting the system to recognize the selected frame by moving it, with the mouse. Keyboard moves did not work.