title: UISearchBar expands when editing
body: <p>In my UITableViewController I have a search bar that works perfectly. The only problem is when i press it to edit the search text, it automatically grows bigger, how can I disable this?
  <img src="https://i.stack.imgur.com/a6qJk.png" alt="before edit">
  <img src="https://i.stack.imgur.com/dMey5.png" alt="when editing, the searchbar has expanded"></p>