Is this still a known bug in iOS 18? Or should it be resolved?

Same issue here.

Thank you for lodging a ticket @Highmore. I'm looking forward to getting a resolution from Apple Support soon. Same as the others in the thread, I can't reproduce the issue on my device but it appears during App Review. Even restructuring the Widgets to follow the sample "Backyard Birds" project doesn't resolve the issue. In my case there have been no code changes in the widgets that could cause the issue to appear. So my guess is that it's something related to Xcode 16/iOS 18. When building with Xcode 15, the problem still appears.