I have a webpage with news on it that is pretty long. I used to be able to use the select tool and start on the top left, then drag over to the right. then drag down to the bottom of the screen and it would allow me to select everything on my long webpage scrolling down with the selection box and then I would move all of it down to make room for new content on the top of the page.

Now it doesn't allow me to go down and select anything further than what is visible on the screen?

Is there a setting I accidentally changed or something?
Thanks