Linking to Different Files in PDF Portfolio

I have created a successful link to the various PDFs in my Portfolio. In screenshot 1 it shows when clicked on the link it takes one to the correct PDF,  but when clicking the X that closes the document see screenshot 2 it does not take me back to the original page where the links are chosen and clicked but stays on the page of the document that was previously clicked see screenshot 3. How do I get it to go back to the original page that was visible when the portfolio was opened