@Chris D this is caused by the google adsense global setting: Let Google optimize the size of your mobile ads
We'll choose the best mobile ad sizes for you, based on what size performs best on your mobile traffic. There's no need for you to modify any ad code on your pages.
Turn this OFF! All of my ads overlapped buttons and navigation. I thought it was related to 2.2.7 because I recently enabled it. Disabled, and fixed. FYI.