https://blog.wongcw.com/2020/06/25/ios-14-%e6%b8%ac%e8%a9%a6%e7%89%88-bug-%e5%8c%af%e7%b8%bd%ef%bc%8c%e9%99%84%e9%99%8d%e7%b4%9a%e6%95%99%e7%a8%8b/