https://blog.wongcw.com/2018/12/07/qt-5-12-lts-%e6%ad%a3%e5%bc%8f%e7%99%bc%e5%b8%83%e4%bf%ae%e5%be%a9%e8%b6%85%e9%81%8e2000-%e5%80%8bbug/