Views that contain a UIVisualEffectView with a glass effect are not properly recorded

[donnywdavis]

Describe the bug
We have been updating for iOS 26 and have added a few UIVisualEffectViews with the glass effect to some elements. When re-recording the snapshots we noticed that the views are recorded as a solid dark grey or black color. Tinkering around it seems that this is related to the tint color on the visual effect view. If I remove the tint color, then the view is recorded correctly. It only seems to be an issue when adding a tint color.

private lazy var visualEffectView: UIVisualEffectView = {
    let visualEffectView = UIVisualEffectView()

    if #available(iOS 26, *) {
        let glassEffect = UIGlassEffect()
        glassEffect.tintColor = SystemColors.Surface.Neutral.default // this line causes the recording issue
        visualEffectView.effect = glassEffect
        visualEffectView.cornerConfiguration =
            .corners(radius: UICornerRadius(floatLiteral: Constants.cornerRadius))
    }

    visualEffectView.translatesAutoresizingMaskIntoConstraints = false
    return visualEffectView
}()

Screenshots

This is what is recorded when using a tint color on the visual effect view. The tint color used here was white.

Expected snapshot. This is recorded with the glass effect, but no tint color. I added a white background for the snapshot since the background is clear by default.

Environment

• swift-snapshot-testing version 1.18.6
• Xcode 26 RC
• Swift 5.10
• OS: iOS 26

[donnywdavis]

For anyone else that is seeing this. As a work around we added a method on UIView that traverses the view hierarchy to find views with a UIGlassEffect and then replaces that to remove the tint color. We extract the tint color first so that it can be reapplied as a background color to avoid having a clear background when recording

extension UIView {
    func obfuscateVisualEffectViews() {
        if self is UIVisualEffectView {
            if #available(iOS 26, *),
               let glassEffect = ((self as! UIVisualEffectView).effect as? UIGlassEffect) {
                let currentTintColor = glassEffect.tintColor
                (self as! UIVisualEffectView).effect = UIGlassEffect()
                backgroundColor = currentTintColor
            }
        }
        subviews.forEach { $0.obfuscateVisualEffectViews() }
    }
}

Then in the tests it can be used like this.

var sut = MyView()
sut.obfuscateVisualEffectViews()

[yevgenPaykey]

Xcode 26.1.1 + iOS 26.1 native toggle looks like this (may be related to glassEffect rendering)

[angu-software]

Yes this is glass effect missing. You must run the snapshot tests on an app target and setting drawHierarchy to true.
The it will render the glass effect as well.