title: iOS 8 MKAnnotationView Callout Incorrectly Sized
body: <p>I have some annotations with titles and subtitles; others with just titles.  When I select an annotation programmatically, I'm often seeing a callout that is incorrectly sized (e.g., generally too tall for the text).  Often, it appears that a view sized to accommodate a subtitle is used for an annotation with just a title.  None of these callouts have accessory views.  Has anyone experienced this problem?  I apparently need to force each accessory view to resize itself when it gets new content, but can't figure out how to do it.</p>