Commented Issue: ContextMenu causes memory leak [7089]

ContextMenu subscribes MouseMove event in ContextMenu.InitializeRootVisual, but it won't unsubscribe it, and it don't use WeakEvent. So it won't be GCed after it is unloaded. I verified the leak in Windbg, sample !gcroot result:

DOMAIN(063DF7F0):HANDLE(Pinned):6b612f8:Root: 07d64260(System.Object[])->
06d96964(SAPStudio.I264Player.SilverlightGui.MainPage_3)->
06d96a2c(MS.Internal.CoreTypeEventHelper)->
06d96a98(System.Collections.Generic.Dictionary`2[[System.Int32, mscorlib],[MS.Internal.CoreTypeEventHelper+EventAndDelegate, System.Windows]])->
07907da0(System.Collections.Generic.Dictionary`2+Entry[[System.Int32, mscorlib],[MS.Internal.CoreTypeEventHelper+EventAndDelegate, System.Windows]][])->
0765c110(MS.Internal.CoreTypeEventHelper+EventAndDelegate)->
0765c0d8(System.Windows.Input.MouseEventHandler)->
*** 0764ce5c(System.Windows.Controls.ContextMenu) ***->
0764de04(System.Windows.Controls.ItemCollection)->
07650ee0(System.Collections.Generic.Dictionary`2[[System.Windows.UIElement, System.Windows],[System.Object, mscorlib]])->
07650f2c(System.Collections.Generic.Dictionary`2+Entry[[System.Windows.UIElement, System.Windows],[System.Object, mscorlib]][])->
0764ec38(System.Windows.Controls.MenuItem)->
0764ecc0(MS.Internal.CoreTypeEventHelper)->
0764f4d8(System.Collections.Generic.Dictionary`2[[System.Int32, mscorlib],[MS.Internal.CoreTypeEventHelper+EventAndDelegate, System.Windows]])->
0764f524(System.Collections.Generic.Dictionary`2+Entry[[System.Int32, mscorlib],[MS.Internal.CoreTypeEventHelper+EventAndDelegate, System.Windows]][])->
0764f4c8(MS.Internal.CoreTypeEventHelper+EventAndDelegate)->
0764f490(System.Windows.RoutedEventHandler)->
0764f318(System.Windows.Data.BindingExpression)->
0764f144(SAPStudio.I264Player.SilverlightGui.Interactivity.ClipboardCommands.CopyCommand)
Comments: ** Comment from web user: beffes **

I compiled all the toolkit but I'm having trouble with SYSTEM.WINDOWS.CONTROL, because when I add a reference to it it stays with an alert icon above it.

Any thoughts on how to get it reference withou error?