Cannot close Kicad windows on a Mac

Software
3

Unfortunately, it’s not that.

Here’s a minimal case that leads to a problem:

  1. Start Kicad (Project Manager window opens)
  2. Launch Pcbnew from Project Manager
  3. Cannot close Pcbnew

Also, as described in a related post, when the Pcbnew window is active, the Kicad toolbar (at the top of the mac screen) doesn’t update (i.e. is still the taskbar for the Project Manager).

So my installation is somehow messed up. Perhaps there’s a problem with my wxWidgets or the GUI/window manager? I installed Kicad from the pre-compiled binaries (4.0.1-stable: http://downloads.kicad.org/osx/stable/kicad-4.0.1.dmg).
I’m not sure where to go from here…