I’ve accidentally tapped the F and D keys together when using Alt+D to reach the address bar a few times. There is no matching shortcut or close-window command in the File menu, yet it instantly closes the window. Can someone tell me why?
Edit: Clarified first sentence and added screen shot for the doubters:
As it turns out, different people have needs different from your own.
And in this case, I stumbled upon the surprising behavior through the keyboard alone, by accident, due to poorly chosen adjacent key commands. I later used the mouse when investigating the menu’s contents.