I am seeing this same behavior and am unable to find a solution. Happy to dupe or report -- is there an existing bug number for this? Steps to duplicate: super easy because this breaks the front page "Landmarks" tutorial for SwiftUI jump to Section 3 step 3 of that tutorial: https://developer.apple.com/tutorials/swiftui/building-lists-and-navigation Expected behavior: I've attached the (a) dysfunctional and also (b) expected behavior below...

Found it on the internet archive: https://archive.org/details/wwdc2015videos/718_hd_building_responsive_and_efficient_apps_with_gcd.mp4