Is there an explanation for Xcode's/Swift's treatment of curly braces in var and let statements?

<promise>No, I am not kicking the "inline curly braces versus aligned ones" dead dog.</promise>

In Xcode 7.x, if I start an

if

then

Alt-[

Ctrl-I Re-Indent

if (condition)
{
      /blah blah*/
}
else
{
     /yadda yadda*/
}

But... if I do this with var or let, Xcode decides that there needs to be another level of indentation on the open --- but not the close --- brace, to wit:

var x: Int
     {          /* <-- why is this one over this far right? */
     didSet
     {
          / handle it*/
     }
}

Am I missing something? Is there a reason for this, or should I log it as a bug?