You probably know about this, but since it's been happening for a few days and is still happening, I decided to mention it.
When I read on the mobile site, I open a story (I'm on an iPhone 5S), and then I always tap on the screen to get rid of the red header bar and make reading easier. All weekend, that has caused a glitch that causes the screen to flash and then only show what was on the screen when I tapped. The rest of the story disappears and the site has to be reloaded to fix the problem.
There are new ads showing, and I assume the glitch is connected to them.
Take care.