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.

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

.activityBackgroundTint(Color.clear) work for me