title: WPF usercontrol layout changed in production
body: <p>I build a usercontrol in our develop environment, and it looked exactly as I wanted it to look.
  In our test and acceptation environment it looks exactly the same.
  But, when we released it to our production environment the buttons at the bottom of the screen moved up a bit and are now slightly over a textbox.</p>
  
  <p>How can I make my usercontrol so that it looks the way I want to in every environment? And what made this error possible? I believe we use the same version of Windows.</p>