.activityBackgroundTint(Color.clear) work for me

Same problems here. Animation seems broken in Widget of iOS 18.

same problem here. userdefaults used by app and widget extension. I found that if i access userdefaults about 3060 secnods after app launch, i can get the right data. also, if create a userdefauts from share group about 3060 seconds after app launch, the userdefaults object is at its right state.