title: Projectitem unavailable when trying to save a form that contains a StatusStrip
body: <p>I added an empty status strip in my empty form and when I try to save this error pops up one time: </p>
  
  <p><a href="https://i.stack.imgur.com/6pwuZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6pwuZ.png" alt="The thrown error"></a></p>
  
  <p>On the next attempt I can save until I change the <code>StatusStrip</code>. When I start the application or re-open the designer it will show my <code>StatusStrip</code>, but none of my added buttons in the <code>StatusStrip</code>. However, the produced designer code still contains the code of the buttons.</p>
  
  <p>Does anybody experienced this bug or is there any way to get further information to solve it?</p>