In a portrait application (in which the landscape is closed), if the device is not placed in a portrait state, the app will still be shown as portrait but the banner thinks the device is in landscape mode and shows the banner with the wrong dimensions.
In a portrait application (in which the landscape is closed), if the device is not placed in a portrait state, the app will still be shown as portrait but the banner thinks the device is in landscape mode and shows the banner with the wrong dimensions.