title: center alignment offcenter in iOS simulator
body: <p><a href="https://www.dropbox.com/s/su11jck7p9fpmvp/Screenshot%202014-08-28%2019.06.52.png?dl=0" rel="nofollow">https://www.dropbox.com/s/su11jck7p9fpmvp/Screenshot%202014-08-28%2019.06.52.png?dl=0</a>
  I'm just playing with constraints and get weird problems when doing basic centering.</p>
  
  <p>1) If I center a subview horizontally with the guidelines that appear then 'reset to suggested constraints' or 'add missing constraints', the above screenshot happens in the simulator. Even if I center both horizontally and vertically with Editor>Align - Center Horizontally/Vertically (which has the correct iOS simulation positions), this 'reset' option always converts to those 2 constraint types in the screenshot and thus the weird positions (why does it get converted? :().</p>
  
  <p>2) If I delete the <strong>vertical space</strong> constraint, the label appears in the correct place <strong>horizontally</strong> (wtf? how is that related at all?) but of course there is the warning that the vertical position is ambiguous.</p>
  
  <p>Basically it seems to align the top layout guide <em>leading</em> X position to the label, instead of the top layout guide <em>center</em> X position.</p>
  
  <p>I'm in Xcode6beta6. Maybe it's just an Xcode6 problem? Or I'm just derping?
  Thanks for any insight!</p>