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Print SwiftUI DisplayList.minimalDescription via LLDB
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Disabling CALayerSystem Behavior in SwiftUI on iOS 26
Disabling CALayerSystem Behavior in SwiftUI on iOS 26
Starting with iOS 26, SwiftUI's UIHostingView may use CALayer-based rendering (caLayerSystem) instead of the traditional UIKit-based rendering (uikitSystem) when certain conditions are met. This can cause unexpected changes in the view hierarchy — for example, _UIGraphicsView and CGDrawingView subviews may be replaced by plain CALayer and CGDrawingLayer sublayers.
Here are two approaches to temporarily disable this behavior in your local debug environment.
Option 1: Environment Variable
Set the environment variable SWIFTUI_DISABLE_MIXED_VIEW_HIERARCHY=1 in your scheme's Run configuration (Edit Scheme → Run → Arguments → Environment Variables).
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A function that creates a _UIViewGlass object with the correctly numbered variant. All in swift!
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