Slider does not work correctly in RTL locales with no mirroring

The Slider widget doesn't change the value correctly if it's use in an RTL locale enviroment with no mirroring applied.

LTR locale (LANG=C for example):
-No mirroring: dragging the value to "Min." (left) takes it down, dragging it to "Max." (right) takes it up.
-With mirroring: dragging the value to "Min." (right) takes it down, dragging it to "Max." (left) takes it up.
RTL locale (LANG=ar_BH.utf8 for example):
-No mirroring: dragging the value to "Min." (left) takes it up, dragging it to "Max." (right) takes it down.
-With mirroring: dragging the value to "Min." (right) takes it down, dragging it to "Max." (left) takes it up.

The --reverse parameter didn't reproduce this for me.

import QtQuick 2.7
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3
ApplicationWindow {
    visible: true
    minimumWidth: 400
    minimumHeight: 100
    locale: Qt.locale("ar_BH")
    //LayoutMirroring.enabled: true
    LayoutMirroring.childrenInherit: true
    RowLayout {
        anchors.fill: parent
        Label {text: "Min."}
        Slider {
            Layout.fillWidth: true
            value: 0.5
            onValueChanged: console.log(value)
        }
        Label {text: "Max."}
    }
}