Usually, when the background is white and it has text all over, the page didn't fully load. Next time this happens, you may wanna refresh the page and have it load a second time.
Or, what could be happening is some switching done on AG3. Yesterday, some couldn't log in, post, or look at anything without coming to a blank page. This was due to switching and updating of hardware, which would cause this. The problems you have could be either one of these reasons.