macOS 13中NavigationSplitView下.onDeleteCommand失效问题求助

开发macOS 13应用时，使用新版NavigationSplitView遇到问题：原本能正常响应的.onDeleteCommand(perform:)逻辑，放入NavigationSplitView后完全失效——当焦点选中目标视图时，按下DELETE键或点击菜单栏「Edit > Delete」无任何反应，且「Edit > Delete」选项处于不可点击状态。

正常工作的测试代码 #

单独使用时，3个可通过TAB键选中的矩形能正确响应.onDeleteCommand：按下DELETE键或点击菜单栏删除选项，矩形会在原色与白色间切换，代码如下：

VStack {
    Rectangle()
        .fill((isColorDeleted.contains(.blue) ? Color.white : Color.blue))
        .padding()
        .focusable()
        .focused($focusedColor, equals: .blue)

    Rectangle()
        .fill((isColorDeleted.contains(.red) ? Color.white : Color.red))
        .padding()
        .focusable()
        .focused($focusedColor, equals: .red)

    Rectangle()
        .fill((isColorDeleted.contains(.yellow) ? Color.white : Color.yellow))
        .padding()
        .focusable()
        .focused($focusedColor, equals: .yellow)
}
.onDeleteCommand {
    if let focusedColor {
        if !isColorDeleted.contains(focusedColor) {
            isColorDeleted.append(focusedColor)
        } else {
            let idx = isColorDeleted.firstIndex(of: focusedColor)!
            isColorDeleted.remove(at: idx)
        }
    }
}

放入NavigationSplitView后失效的代码 #

将上述视图放入NavigationSplitView的detail列后，删除逻辑完全失效，代码如下：

NavigationSplitView(columnVisibility: $visibility) {
    List {
        Text("Main page")
    }
} detail: {
    VStack {
        Rectangle()
            .fill((isColorDeleted.contains(.blue) ? Color.white : Color.blue))
            .padding()
            .focusable()
            .focused($focusedColor, equals: .blue)

        Rectangle()
            .fill((isColorDeleted.contains(.red) ? Color.white : Color.red))
            .padding()
            .focusable()
            .focused($focusedColor, equals: .red)

        Rectangle()
            .fill((isColorDeleted.contains(.yellow) ? Color.white : Color.yellow))
            .padding()
            .focusable()
            .focused($focusedColor, equals: .yellow)
    }
    .onDeleteCommand {
        if let focusedColor {
            if !isColorDeleted.contains(focusedColor) {
                isColorDeleted.append(focusedColor)
            } else {
                let idx = isColorDeleted.firstIndex(of: focusedColor)!
                isColorDeleted.remove(at: idx)
            }
        }
    }
}

内容的提问来源于stack exchange，提问作者MaxAuMax