[Reg] TreeView editDelegate doesn't get positioned correctly

Trying to edit cells in a TreeView. But the TextEdit starts editing the parent node or some other nonsensical location. Pretty sure this used to work fine in Version 6.7.3.

Starting Point:

After Double clicking on "Child 1":

Also after hitting enter the "Child 1" text doesn't become visible again either:

$Model ist just a simple QStandardItemModel I bound to the context. In Qml I'm using the TreeViewDelegate  but also I managed to reproduce it with a custom delegate.

import QtQuick
import QtQuick.Controls
ApplicationWindow {
    width: 800
    height: 600
    visible: true    TreeView {
        id: treeView
        anchors.fill: parent
        anchors.margins: 10
        clip: true        
        selectionModel: ItemSelectionModel {}
        editTriggers: TableView.DoubleTapped
        model: $Model        
        delegate: TreeViewDelegate {
            font.pointSize: 14
        }
    }
}