ALT-Tab crash in fullscreen mode

[EmptyKeys]

Hi, I got few reports of this exception while using ALT-Tab in fullscreen mode. Any idea what could be the reason?

Exception classes:
System.NullReferenceException Exception messages:
Object reference not set to an instance of an object. Stack Traces:
@ SiliconStudio.Xenko.Graphics.SwapChainGraphicsPresenter.Present line: 0 @ SiliconStudio.Xenko.Games.GraphicsDeviceManager.SiliconStudio.Xenko.Games.IGraphicsDeviceManager.EndDraw line: 0 @ SiliconStudio.Xenko.Games.GameBase.EndDraw line: 0 @ SiliconStudio.Xenko.Engine.Game.EndDraw line: 0 @ SiliconStudio.Xenko.Games.GameBase.TickInternal line: 0 @ SiliconStudio.Xenko.Games.GameBase.Tick line: 0 @ SiliconStudio.Xenko.Games.GamePlatform.Tick line: 0 @ SiliconStudio.Xenko.Games.GamePlatform.OnRunCallback line: 0 @ SiliconStudio.Xenko.Games.WindowsMessageLoop.Run line: 0 @ SiliconStudio.Xenko.Games.GameWindowWinforms.Run line: 0 @ SiliconStudio.Xenko.Games.GameBase.Run line: 0 @ EmptyKeys.CoG.CoGApp.Main line: 0