title: Developer Exception Page is blank if added to IApplicationBuilder after MVC
body: <p>Developer Exception Page (<code>app.UseDeveloperExceptionPage()</code>) is blank if added to <code>IApplicationBuilder</code> after MVC (<code>app.UseMvc()</code>) in <code>Startup.cs</code> <code>Configure</code> method.</p>
  
  <p><a href="https://i.stack.imgur.com/fjdXt.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fjdXt.png" alt="Developer Exception Page added after MVC"></a></p>
  
  <p>Developer Exception Page works fine if added before MVC.</p>
  
  <p><a href="https://i.stack.imgur.com/yStqu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yStqu.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/cN2DE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cN2DE.png" alt="enter image description here"></a></p>
  
  <p>Is this behavior intentional or am doing something wrong?</p>
  
  <ul>
  <li>Visual Studio Code 0.10.6 on Mac</li>
  <li>Microsoft.AspNet.Diagnostics 1.0.0-rc1-final</li>
  <li>Microsoft.AspNet.Mvc 6.0.0-rc1-final</li>
  <li>DNX Mono 1.0.0-rc1-update1</li>
  </ul>