I have the same problem. By setting the border style to "anything" you mean "none", correct? I don't see an option for "anything." I have set the border style to "none". In IB, my background shows, but when I run the app, it is gone. Why?

I'm getting the same message, except, in my case I'm just making a simple fetch request to an API. It appears that everything is working correctly but the message concerns me that I'm missing something. I'm new to iOS development (I come from an Android background) so I don't want to ignore any warnings that my console is giving me.