Screens losing focus

Hi all,

I'll try to explain this as best as I can.

Lets say I open up lets say 'Window A' whether it be Firefox or a my documents window.

I then open up another 'Window B ' on top of Window A. When I close 'Window B', 'Window A' has lost its focus and I need to click back on it somewhere to regain it.

See the diagram attached.

With your picture you provided, I can't tell a difference between the 2 browsers you have open. They look the same to me...color, brightness, focus...all looks the same.

I think he means the window no longer has control need to click the mouse to give it control.

Yeah thats exactly what I mean, sorry I didnt put it very well.

My solution is simple:
When you loose focus press alt + f4
The nasty app that was causing this is killed >
The problem is that I don't know how to identify the app, is there and event inspector or something?