In 4.8 you have to click and release the mouse button before the apps menu appears. In 4.6 and earlier, you could click down on the apps menu button, drag down to your selected menu item and release the mouse button to activate it. It now takes two clicks to do what you used to be able to do with one click. Even though the apps menu panel widget technically is a button, this behaviour is inconsistent with GTK+ combo buttons, menubars and context menus, all of which more closely resemble the apps menu button in functionality (spawning menu widgets) than actual buttons do. I'd really appreciate it if someone could fix this. It's inconsistent with the way I interact with every other GtkMenu and it keeps tripping me up. Thanks.
Fixed in 7aa32d3.
Much appreciated.