Comment 7 for bug 1475205

I can not reproduce this issue in QtQuick.Controls with ApplicationWindow and toolBar. Test app attached, you'll need qml-module-qtquick-controls installed of course.

However, this can be easily reproduced in Ubuntu.Components 1.1 with MainView and Page title, like this:

MainView {
    objectName: "test"
    applicationName: "com.ubuntu.chinese-font"

    id: mainView
    width: units.gu(50)
    height: units.gu(67)
    useDeprecatedToolbar: false
    Component.onCompleted: pageStack.push(mainPage);
    PageStack {
        id: pageStack
        Page {
            id: mainPage
            objectName: "mainPage"
            title: i18n.tr("系统设置")
            visible: true
        }
    }
}