I'm also having this issue. It also happens when SwiftData is used in an App Intent and the main app.

Maybe using AppShortcutParameterPresentation? That is a parameter for one of the initializers for AppShortcut. Within AppShortcutParameterPresentation there is a parameter for an Options Collection. I haven't been able to figure out how to get that alternate init of AppShortcut working so please post the solution if you figure this out. I've been trying all day to get this to work with no luck. https://developer.apple.com/documentation/appintents/appshortcut/init(intent:phrases:shorttitle:systemimagename:parameterpresentation:)

Did you ever figure this out or does anyone else know the solution?

I have the same problem reloading the widget timelines when the app is in the foreground. When the widgets are reloaded from the foreground without much time in between reloads, the widgets don't get updated. This is undescribed by the documentation and a big problem for my app. Has anyone figured out how to always update widgets at the correct time from the foreground?

My project is also not compiling when .backgroundTask is used!

I'm also experiencing this frustrating issue. I have a use case where this time delay is important :( Please fix Apple! Issue persists on WatchOS 8.4.1

I'm having this same issue, did you ever find a solution Michael?

I'm also struggling with accessing core data from the complication controller. How can this be done?

I am having this same issue with the Apple Watch Series 5 and Xcode 12 beta 4, watchOS 7.0 beta 4, iOS 14 beta 4 . No solution found yet.

I also just followed these instructions and I got the same error emails as before. Is there anything that wasn't included here that could make this work?