Constraints breaking in SwiftUI Form

[anmolrajpal]

Description of the problem: When implementing MultiSlider in SwiftUI Form, the height constraints break which causes the slider to disappear until I explicitly scroll back and forth to its position.

My Installation Process

File -> Swift Packages -> Add Package Dependency -> [URL: https://github.com/yonat/MultiSlider], [Branch: swiftui]

Code Snippet

    Form {
        Section {
            VStack {
                HStack {
                    Text("Age")
                    Spacer()
                    Text("\(Int(selectedAgeRange[0])) - \(Int(selectedAgeRange[1]))")
                }.font(.title)
                MultiValueSlider(
                    value: $selectedAgeRange,
                    minimumValue: 18,
                    maximumValue: 80,
                    snapStepSize: 1,
                    outerTrackColor: .lightGray,
                    keepsDistanceBetweenThumbs: true
                )
            }
        }
    }

Debug Log

When the slider is not visible

(
"<NSAutoresizingMaskLayoutConstraint:0x283b505a0 h=--& v=--& multi_slider.height == 63   (active, names: multi_slider:0x137f04cb0 )>",
"<NSLayoutConstraint:0x283b5b890 multi_slider.height == 31   (active, names: multi_slider:0x137f04cb0 )>"
)

Will attempt to recover by breaking constraint <NSLayoutConstraint:0x283b5b890 multi_slider.height == 31 (active, names: multi_slider:0x137f04cb0 )>

> When I scroll back & forth to its position & then slider appears

[Warning] Warning once only: Detected a case where constraints ambiguously suggest a height of zero for a table view cell's content view. We're considering the collapse unintentional and using standard height instead. Cell: <SwiftUI.ListCoreCellHost: 0x13c214b00; baseClass = UITableViewCell; frame = (0 199.667; 374 0.666667); clipsToBounds = YES; autoresize = W; layer = <CALayer: 0x2818bd660>>

[yonat]

Trying to reproduce this problem, I'm able to see the warning but not to cause the slider to disappear. Please add code that reproduces the disappearance problem, so I can find how to solve it.

[yonat]

@anmolrajpal Still a problem? To help me help you, please create a minimal reproducible project:

1. Fork this repo. (See instructions)
2. Open the project in the Example directory.
3. Change the code there to make the problem appear.

Then just link to your fork here.