I want to hide the bottom toolbar on a certain screen in my application, and IB seems to have an option for that which seems to preview as working correctly, but when I build and test the application the bottom toolbar is still there.
I know that I can use [self.navigationController setToolbarHidden:YES]; but my question is not how to do it using code, but how to get this to work through Interface Builder.

Here is a screenshot of what I am talking about. See on the right how I have selected Bottom Bar: None – this removes the bottom bar as previewed to the left. If I set it to inferred (instead of None) the bottom bar shows in the IB preview.
How do I get this to work correctly?
You can’t set this in Interface Builder. If you notice the header of the section in IB where you can turn on/off these different bars, it says “simulated”. These options are only there to help you visualize your UI in IB while designing it. They have absolutely no influence on the running app.