Microsoft's ad control is rendered on top of the RMA overlay

[ltomuta]

The root of the problem, and a workaround, is documented at http://advertising.microsoft.com/en-us/blogpost/115175/microsoft-advertising-blog/challenges-with-the-xaml-version-of-the-ads-sdk

This could be something to document as a known issue or, if RMA is to take care of hiding the ad, a pointer to the ad control should be passed to it.