qmlformat moves all functions to top-level even when they have the same name

$ cat test.qml 
import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.2

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

    function a() {
        function inner() {}
    }

    function b() {
        function inner() {}
    }
}
$ qmlformat -i test.qml
$ cat test.qml      
import QtQuick 2.12
import QtQuick.Controls 2.2
import QtQuick.Window 2.12

ApplicationWindow {

    function a() {
    }

    function inner() {
    }

    function b() {
    }

    function inner() {
    }

    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")
}
$ qmlscene test.qml 
file:///Users/d.heyman/code/qt-bugs/test.qml:16 Duplicate method name