Anyone else had this issue? After updating my my Mi Box S to Android 9 beta 3 the Chromecast backdrop will not respond to any changes I make to it in the Google Home app. It won’t show the weather or show fine artwork, for example. Casting seems to work though.
Download Arial Dream App it Replaces Googles built in Screen Saver .
open link in a desktop Browser and install too the Mi box make sure you are login to the same google account on desktop and android tv box .
if link is broken just Google Search Arial Dream
https://play.google.com/store/apps/details?id=com.codingbuffalo.aerialdream&hl=en_US