flip the page while zoomed in

The text is rather small when not zoomed in, so it would be nice to be able to zoom in and still be able to flip the page. If not this feature, perhaps a pop up for the user when they are zoomed and trying to flip the page, informing them that they can't flip while zoomed; currently the user tries several times, thinking perhaps they are doing something wrong when they can't "grasp" the corner of the page to flip it. This makes the experience a little negative. Thanks for your consideration!