My app is setup to add a banner to the app icon based on the configuration being build. It was done following these steps.

<https://www.raywenderlich.com/105641/change-app-icon-build-time>

As of Xcode 9/iOS 11, this doesn't seem to work anymore. The images are still correctly being modified and they exist in the app bundle, but they are not being used as the app icon on the device.

Is there any way to do this again?