Talking about Metro apps, I found that if the Edge browser hang, my mouse cursor just went under them.
And the gsmarena website has the effect that will made the graphic driver unstable, and draw a effect that will over anything and showing on the screen, but you can't screenshot it.
Anyways, back to topic.
Ya, maybe also showing their Titlebar name too?
For example, Facebook and Messenger are using "WinUAPEntry.exe" as their name, I really... they also bundle a unstable Webkit engine with them too.