Still reproducible in Xcode 26.2 beta (17C5013i). [Update]: Issue was resolved when I upgraded to macOS 26.1 (25B78).

@DTS Engineer I hope you and the SwiftUI team are aware of the severity of this issue and the massive scale of apps it is affecting. I sincerely hope you treat this with a sense of urgency since there has been two dot releases for iOS 26 and this very apparent and visual bug still has not been resolved. Thanks!