For teaching purposes, I cloned the main branch of PGM from a clean start, using whatever JUCE and foleys_gui_magic commits it had registered as submodules, and unfortunately, examples/EqualizerExample crashes on startup due to that toggle-button issue in which a click happens within the gesture of a prior click. Trying the develop branch next . . .
The same problem appears to be happening on the develop branch.
I turned off checking for that in JUCE, and the equalizer sections appear to be enabled (checkbox checked), but sound disabled. I can uncheck the enable checkbox, but then I cannot check it again. Nothing I tried enabled the sections audibly.