title: Xcode Interface Builder 9.1 Collection View Cells have too small "expected height"
body: <p>Recently, I encountered a problem with the Interface Builder which I failed to solve. I'm using a UICollectionViewController and whenever I add a Cell it immediately shows a orange rectangle (indicating a auto-layout update). Updating the frame/cell doesn't change anything. The warning associated with the orange marking reads "Expected: height=Y, Actual: height=X" where Y is <strong>always</strong> <em>exactly</em> X-100. That is: When I set a custom cell height of 193, it says "Expected: height=93". This happens no matter which size I enter.</p>
  
  <p>The problem with this is that I have many difficulties with the subviews and their constraints. For instance, if I add a subview with the constraint to keep the same height as the cell, it will be shown as 93 (the expected height), even though my cell should be 193. Layouting becomes impossible.</p>
  
  <p>I tried adding a new cell, same issue. I tried removing every subview and re-adding them, nothing.</p>
  
  <p>Any ideas are highly welcome.</p>
  
  <p>Thank you very much!</p>