I'm having the same problem. As of today (Mar 23), the latest ASC trends are from Mar 19th.

Seems like it's been an issue for some time: https://developer.apple.com/forums/thread/127928 My most recent trends are 5 days old :((

Thanks @Palli_k, I don't know if there's any better/correct way of doing it but using: ZStack { AccessoryWidgetBackground() [...] } .widgetBackground(backgroundView: EmptyView()) At least seems to get rid of the error. While keeping the functionality and UI the same.. I have no idea what Apple was thinking.. even their own API is still wrong, 1w after the public iOS 17 release: https://developer.apple.com/documentation/widgetkit/accessorywidgetbackground If there's any good resource about how .containerBackground is actually supposed to work, please lmk..