XCode 6 Table View cell running off the screen

I have a table view cell inside of a view controller in Xcode storyboard. The cell is formatted 'Right detail' with a Title on the left and Subtitle on the right. It looks like the cell is too wide for the screen - and the Subtitle information has rolled off the side of the screen. I'm on Xcode 6. The table view looks like this

But it should look like this

Is there some formatting option I could check so that the information fits neatly in the table view screen? Thanks for any advice.