iOS UItableview scrollToRowAtIndexPath not working anymore

Question

This morning I just installed new Xcode which includes iOS 6.

I have a table view loaded with a plist file containing chapters and lines. Chapters define the section

Answer 1

I'm adding this answer as an addition to Fyodor Volchyok's answer. I also found that dispatching solves the issue. I was able to find a workaround that doesn't dispatch.

self.tableView.reloadData()
let index = // the desired index path

// For some reason, requesting the cell prior to 
// scrolling was enough to workaround the issue.
self.tableView.cellForRowAtIndexPath(index)

self.tableView.scrollToRowAtIndexPath(index, atScrollPosition: .Top, animated: false)