title: Intellisense window has input field, and doesn't commit on space
body: <p>All of a sudden, my intellisense window in VS2010 Express has a input field which has exactly what I'm typing. This wouldn't bother me, except that now space doesn't commit the selected choice that intellisense gives me.</p>
  
  <p>Also note that the option in Tools-Options-Text Editor-C#-IntelliSense does have the "Comitted by pressing the spacebar" checked, yet it doesn't work.</p>
  
  <p><img src="https://i.stack.imgur.com/TQ3nD.png" alt="enter image description here"></p>