title: Adaptive Card clears input on submit
body: <p>From a Microsoft Teams bot I send an <code>Adaptive Card</code> with input fields and a <code>Submit</code> action. When the user clicks <code>Submit</code> I receive the data entered but the form fields are cleared.</p>
  
  <p>Why is this? What am I doing wrong? This behavior is extremely annoying as I can't verify the input and ask the user to correct it.</p>
  
  <p>This happens in the desktop Teams app, Teams in a browser, Teams webchat in a web page and the Bot Emulator. In the Emulator it suffices for the field to loose focus.</p>
  
  <p>In case it matters I use nodejs.</p>