macOS 14中CMD`切换窗口后ScreenCaptureKit帧异常的解决方案求助

已向苹果提交Bug反馈（FB13561921），现寻求无视觉瑕疵、无需辅助功能的规避方案。

Bug现象 #

使用ScreenCaptureKit捕获全屏帧时，在多窗口应用中按下「切换到下一个窗口」（CMD + `）快捷键后，捕获的帧无法正确更新：实际已前置的窗口在捕获帧中仍显示为后置状态，与真实屏幕显示不符。

复现步骤 #

• 运行苹果官方ScreenCaptureKit示例应用

  注：搭建SCK会话并展示输出的代码量较大，使用官方代码可排除框架误用问题

• 捕获全屏内容（而非单个窗口）
• 在文本编辑（Text Edit）中打开两个部分重叠的窗口，确保示例应用能正确显示
• 按下*CMD + `*切换文本编辑的窗口
• 此时真实屏幕上窗口的Z轴层级已变化，但示例应用中仍显示原前置窗口在顶层
• 拖动窗口或点击窗口间隙后，捕获帧恢复正常更新

该Bug存在于macOS 14.1-14.3，macOS 13.6无此问题。

已尝试的临时方案 #

• 重启SCStream无效果，重启后的流仍显示原前置窗口
• 通过辅助功能模拟拖动窗口再还原，但会产生视觉瑕疵

问题 #

是否存在无需辅助功能、无视觉瑕疵的方案，能让ScreenCaptureKit在使用该快捷键后生成正确更新的新前置窗口帧？

附产生视觉瑕疵的辅助功能"hack"代码：

func moveTheWindow(_ point: CGPoint) async {
    guard let originalCursorPosition = CGEvent(source: nil)?.location else {
        print("Failed to get the original cursor position.")
        return
    }

    let mouseDownPoint = point
    let mouseDragRightPoint = CGPoint(x: point.x + 1, y: point.y)
    let mouseDragLeftPoint = CGPoint(x: point.x, y: point.y)

    // Mouse down at the starting point
    if let mouseDown = CGEvent(mouseEventSource: nil, mouseType: .leftMouseDown, mouseCursorPosition: mouseDownPoint, mouseButton: .left) {
        mouseDown.post(tap: .cghidEventTap)
    }

    // Drag the window 1px to the right
    if let mouseDragRight = CGEvent(
        mouseEventSource: nil,
        mouseType: .leftMouseDragged,
        mouseCursorPosition: mouseDragRightPoint,
        mouseButton: .left
    ) {
        mouseDragRight.post(tap: .cghidEventTap)
    }

    // Mouse up to finish the first drag
    if let mouseUpRight = CGEvent(
        mouseEventSource: nil,
        mouseType: .leftMouseUp,
        mouseCursorPosition: mouseDragRightPoint,
        mouseButton: .left
    ) {
        mouseUpRight.post(tap: .cghidEventTap)
    }

    try? await Task.sleep(nanoseconds: NSEC_PER_SEC / 20)

    // Mouse down again for the second drag
    if let mouseDownAgain = CGEvent(
        mouseEventSource: nil,
        mouseType: .leftMouseDown,
        mouseCursorPosition: mouseDragRightPoint,
        mouseButton: .left
    ) {
        mouseDownAgain.post(tap: .cghidEventTap)
    }

    // Drag the window back 1px to the left
    if let mouseDragLeft = CGEvent(
        mouseEventSource: nil,
        mouseType: .leftMouseDragged,
        mouseCursorPosition: mouseDragLeftPoint,
        mouseButton: .left
    ) {
        mouseDragLeft.post(tap: .cghidEventTap)
    }

    // Mouse up to complete the second drag
    if let mouseUpLeft = CGEvent(mouseEventSource: nil, mouseType: .leftMouseUp, mouseCursorPosition: mouseDragLeftPoint,
                                 mouseButton: .left)
    {
        mouseUpLeft.post(tap: .cghidEventTap)
    }

    try? await Task.sleep(nanoseconds: NSEC_PER_SEC / 20)

    // Move the cursor back to the original position
    CGWarpMouseCursorPosition(originalCursorPosition)
}

内容的提问来源于stack exchange，提问作者jnpdx