title: Jedi-vim sometimes not showing the autocompletion list.
body: <p>I just installed Jedi-vim in my built in vim on Mac.
  I had the 
  <code>let g:pymode_rope = 0</code>
  And everything looks fine except it is not showing the list for autocompletion while I can still see the documentation and can switch between different options (while i cant see those option list)
  Here is a picture.
  <img src="https://i.stack.imgur.com/GUIlO.png" alt="enter image description here"></p>
  
  <p>As you can see, there is the documentation for List.append and I can switch to other options as well, but i cannot see the whole autocompletion list.
  Could anyone give me any suggestion about this?
  Thanks!</p>