A screen keeps showing its content while a single new item loads
Switching a screen to a single item that couldn't load yet turned the screen black; the screen now keeps showing what it had until the new item is ready.
Switching a screen to a single item that couldn't load yet, such as an app still downloading its files or a web page that failed to load, turned the screen black while the player tried again.
The screen now keeps showing what was there, the previous content or the same item if it was already playing, until the new item loads. Screens with more than 1 item to show already worked this way.