Answer by Dávid Pásztor for How to set UIHostingController's background color...
If you are using a UIHostingController, you need to set the backgroundColor property of its view to .clear as well.yourHostingController.view.backgroundColor = .clear
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I need to be able to see through my SwiftUI Views as well as the UIHosting Controller presenting them in order to see a background image underneath them. The code below still shows a white rectangle...
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