title: Inconsistent spacing between grouped sections
body: <p>When a section in a grouped UITableView contains both header text and footer text, the spacing between that section and one above it becomes inconsistent with the rest of the table view.</p>
  
  <p>To make sure this wasn't developer error (or an Xcode project upgrade issue) I added a new UITableViewController to my project and set it to Style > Grouped. I then added three sections, each containing header text. In the last section I added footer text. All heights are set to their default values.</p>
  
  <p>As you can see in the <a href="https://imgur.com/a/esnTY" rel="nofollow noreferrer">linked example</a>, the distance between Section 1 and Section 2 is 168px. However the distance between Section 2 and Section 3 is 190px. If I remove the footer text in Section 3, this closes up to the correct 168px so having footer text in Section 3 is somehow causing this spacing issue between sections.</p>
  
  <p>This layout was built entirely in the Storyboard. I've also tried building it from code (including setting header/foot height manually) and the same issue occurs.</p>
  
  <p>Any ideas?</p>