bold:true can't set with italic:true and family:"Microsoft YaHei"

import QtQuick 2.12
import QtQuick.Window 2.12

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Text {
        id: name1
        text: qsTr("你好 normal")
        font.family: "Microsoft YaHei"
        font.pointSize: 40
        font.bold: false
        font.italic: false
    }
    Text {
        y: 60
        id: name2
        text: qsTr("你好 italic")
        font.family: "Microsoft YaHei"
        font.pointSize: 40
        font.bold: false
        font.italic: true
    }
    Text {
        y: 120
        id: name3
        text: qsTr("你好 bold")
        font.family: "Microsoft YaHei"
        font.pointSize: 40
        font.bold: true
        font.italic: false
    }
    Text {
        y: 180
        id: name4
        text: qsTr("你好 italic bold")
        font.family: "Microsoft YaHei"
        font.pointSize: 40
        font.bold: true
        font.italic: true
    }
}