I ran the same procedure again. Now with iwevent running in a terminal. I can see "Set Mode:Managed" appearing on the screen when NM tries to connect, so I guess NM sets the wrong mode when trying to connect.
I ran the same procedure again. Now with iwevent running in a terminal. I can see "Set Mode:Managed" appearing on the screen when NM tries to connect, so I guess NM sets the wrong mode when trying to connect.