title: Immediate window in Visual Studio disappears at runtime
body: <p>In Visual Studio 17.0 I am debugging C# code and pressed <code>Ctrl+Alt+i</code> to open an immediate window and nothing happens.  When I stop debugging and use the key combination <code>Ctrl+Alt+i</code>, the immediate window appears.  When I start debugging, the window disappears.  What am I doing wrong?</p>