I hit a problem fairly regularly where my app window goes black when trying to snap it to the top of a secondary monitor plugged into a Dell XPS15 laptop. Nothing shows up in the window, but all of the UI elements are still there (if I click where a menu item is, I will get the menu drop-down for example).
I've only seen it so far with Visual Studio 2013 and SQL Server Management Studio. I can eventually get it to work if I snap to the primary (laptop) monitor then kind of drag it over along the top. Or if I close the app and re-start it will sometimes work. I never had this problem with 8.1. I just updated my display drivers and have the latest OS update, so that doesn't seem to be the problem.
This is really annoying and adds to the unfinished feel of this OS.
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