Ah! Is not YOUR form that is hidden, doh!
I see what you mean, you use Property and Command Window as Dockable... Well, I do it too, but I have 2 monitors and enough real estate so it was never a problem to me, I did not notice it, only after your comment I tried to figure out what could be happening. If I were You, I would not use dockable windows with so few real state, but I am not and my suggestion won't solve your problem <g>.
>I mean that the form is not activated and I can not access it since it's hidden under property window and command window. I have to go to the menu\File\Close and close it to be able to continue my work.
"The five senses obstruct or deform the apprehension of reality."
Jorge L. Borges?
"Premature optimization is the root of all evil in programming."
Donald Knuth, repeating C. A. R. Hoare
"To die for a religion is easier than to live it absolutely"
Jorge L. Borges