Typed text appear in the page search

[adrian]

When I am writing text in th PDF, the text appears at the square where you have to write the number of the page you want to see, or you can see the page where you are. I think it's because the focus is always there. This is a minor problem, because you can keep writing.
Cuando escribo texto en el PDF, el texto aparece en el recuadro reservado para elegir el número de la página, a la vez que en la propia página. Creo que lo que ocurre es que el foco siempre está en el recuadro