PanX, PopUp Menu Buttons, and OS Sierra 10.12.2. BETA

Well, it’s always SOMETHING, isn’t it… crashing on closing windows continues, albeit less often, but a NEW oddity has appeared: previously a popup menu button would show a small “check” mark at the left in the menu next to the currently selected value, but now it shows a black rectangle with a white “?” in it instead. The font size of the menu item text still seems to vary sporadically: on one click it will be large and the next click it will be small, as I had intended to be when I created the menu.