contentView not indenting in iOS 6 UITableViewCell prototype cell

I am configuring a custom UITableViewCell using a prototype cell in a Storyboard. However, all the UILabels (and other UI elements) do not seem to be added to the cell's contentView, instead being added to the UITableViewCell view directly. This creates issues when the cell is put into editing mode, as the content is not automatically shifted/indented (which it would do, if they were inside the contentView).

Is there any way to add the UI elements to the contentView when laying out the cell using Interface Builder/Storyboard/prototype cells? The only way I have found is to create everything in code and use [cell.contentView addSubView:labelOne] which wouldn't be great, as it is much easier to layout the cell graphically.