Bug or is it by design?

If I open a window, say, Explorer, then open Renoise, then minimize Renoise, then close the Explorer window, it will automatically place me back into Renoise. Is this supposed to do this? It is very annoying to me as I will often use other apps while I have renoise open, and I will often minimize Renoise, open something and close something else. Everytime I do this, it puts me back into Renoise.

Thanks for the suggestion but working at 1024x768, windowed mode is more of a pain than a solution. My video card (yes it is crap) won’t support anything higher.