TabButton has wrong text alignment in statically created itmes

import QtQuick 2.5
import QtQuick.Layouts 1.1
import Qt.labs.controls 1.0

ApplicationWindow {
    visible: true
    width: 640
    height: 300

    ListModel {
        id: tabModel

        ListElement {
            text: "Test 0"
        }
        ListElement {
            text: "Test 1"
        }
    }

    Column {
        width: parent.width

        TabBar {
            width: parent.width

            Repeater {
                model: tabModel
                delegate: TabButton {
                    text: model.text
                }
            }
        }

        TabBar {
            width: parent.width

            TabButton {
                text: "Test 0"
            }
            TabButton {
                text: "Test 1"
            }
        }
    }