On Kindle Fire HDX (3rd Generation), the application icon in the carousel has a black frame, you can see a black background behind the icon (where the edges are rounded) in the Apps. The icons are correct in the build and developer console, and this problem can’t be repeated on other Kindle devices. What’s the error then? It was correct in the latest updates.
We found one topic: https://forums.developer.amazon.com/questions/33921/carousel-icon-displayed-with-black-background.html , but there is no answer. We have added icons of next sizes: 114x114 and 512x512 (png image format) in the developer console.