 //            self.setPosition(pos, ofDividerAtIndex: newPaneViewIndex)
         }
         
-//        newSplitView.window?.makeFirstResponder(newPaneView)
+        newSplitView.window?.makeFirstResponder(newPaneView)
     }
     
     // MARK: - Helpers

    override public class func requiresConstraintBasedLayout() -> Bool {
        return false
    }
        
    // MARK: - Selection

    public override func mouseUp(theEvent: NSEvent) {

    }
}

// MARK: Alert

private extension NSAlert {
    static func alertForMinimumSplitAdditionalExtension(minimumAdditionalExtension: CGFloat,
