LazyVGrid in Xcode 13 ignores Spacer

It seems the behavior of LazyVGrid has changed a bit in Xcode 13. For my use case, I need a grid with each item's height being variable.

Here is the implementation:

struct ExampleLazyVGrid: View {

    private let columns = Array(repeating: GridItem(.flexible(), spacing: 24), count: 4)

    private let sizes: [CGFloat] = [100, 150, 80, 110, 50, 120, 90, 40, 130, 140, 70, 60]

    var body: some View {
      LazyVGrid(columns: columns, alignment: .leading, spacing: 24) {
        ForEach(sizes, id: \.self) { size in
          VStack(spacing: 0) {
            Rectangle()
              .fill(Color.gray)
              .frame(width: size, height: size)

            Spacer()
          }
        }
      }
      .background(Color.gray.opacity(0.5))
    }
  }

In Xcode 12.5, the rectangles are aligned at the top as expected as shown here:

In Xcode 13, the Spacer() is ignored and the rectangles are no longer top aligned as shown here:

So same code, just different behavior between Xcode 12.5 and Xcode 13. I'm experimenting with a workaround, but seems like a bug to me?