ZStack doesn't render it's contents frames well

[Joannis]

Describe the bug
A ZStack doesn't respect its childrens' frame preferences. They're aligned in a grid which is constrained in size. So the ZStack renders its 'expected size' (without taking #387 into consideration). But the contents of this ZStack don't follow this pattern.

To Reproduce

struct TokamakApp: App {
    var body: some Scene {
        WindowGroup("Tokamak App") {
            ContentView()
        }
    }
}

struct ContentView: View {
    var body: some View {
        ZStack {
            Color(white: 0.15).frame(
                minWidth: 0,
                maxWidth: .infinity,
                minHeight: 0,
                maxHeight: .infinity
            )
        }.frame(
            minWidth: 0,
            maxWidth: .infinity,
            minHeight: 0,
            maxHeight: .infinity
        )
    }
}

Expected behavior
The ZStack is rendered full-screen and its contents also are rendered in the full size of the ZStack frame.

Screenshots
The view is black on the left, but nothing renders throughout the right.

Desktop (please complete the following information):

• OS: macOS
• Browser Safari
• Version of the browser 14.0.3 (16610.4.3.1.4)
• Version of Tokamak 0.6.1

Additional context
Add any other context about the problem here.

[j-f1]

I think a lot of these things will be fixed by abandoning CSS layout in favor of a custom solution in #379

[Joannis]

Thanks @j-f1, I hope so!