title: I cannot select a column to add a Referenced column in MySQL workbench when creating a Foreign Key
body: <p>I am trying to create a foreign key in MySQL Workbench and when I try and add a Reference Column it doesn't tick the box beside the column. This is happening for the second Foreign Key that I'm creating in this table. I was able to create one before but the second one doesn't seem to work. Here is what the first FK looks like:
  <a href="https://i.stack.imgur.com/8FzWp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8FzWp.png" alt="first Foreign Key"></a></p>
  
  <p>The second one looks like this:  </p>
  
  <p><a href="https://i.stack.imgur.com/M7DhX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/M7DhX.png" alt="Photo of problem"></a></p>
  
  <p>As you can see there is no tick in the box and when I select the reference column it will reset. Is this a bug or have I done something wrong?</p>