You could also open up an article in a new tab. Problem solved.
That.
That's what I do, too. Hold the finger down on the link for a second or two, and a menu appears with "Open in new tab". When you switch tabs back to the prior one you came from, it'll be where you left it.
I have noticed that pages seem to reload their content when switching tabs; not sure what that's about, but it's rarely a big deal.