Delay in presenting a modal view controller

Question

I have a tab bar based app. There are navigation controllers in all 5 tabs with instances of custom view controller setup properly as root view controllers. This loads just

Answer 1

The common problem with this behaviour is as follows:

one sets selectionStyle = .none for a cell in the tableView (it seems that it doesn't depend on UITableViewController subclassing as was written at http://openradar.appspot.com/19563577) and uses at the delegate method

override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)

animating deselect

tableView.deselectRow(at: indexPath, animated: true)

which implies animation for non-animating cell.

In this case the subsequent view controller presentation has a delay.

There are some workaround solutions including dispatch_async on main thread, but it is better not to call deselectRow even without animation on unselectable cells in your code.