QTreeWidget::setchildIndicatorPolicy(DontShowIndicator) hides child nodes

Directed to post a bug after posting a question here:

https://forum.qt.io/topic/76961/expand-all-qtreewidget-items-and-hide-all-expansion-indicators/3

I don't want the user to be able to collapse the nodes, so I use setChildIndicatorPolicy:

QTreeWidgetItem* last = tree->topLevelItem(tree->topLevelItemCount() - 1);
while(last)
{
	last->setChildIndicatorPolicy(QTreeWidgetItem::DontShowIndicator);
	last = last->child(last->childCount() - 1);
}

However, doing this hides all the children below the first level

The documentation for QTreeWidgetItem::DontShowIndicator says

The controls for expanding and collapsing will never be shown even if there are children. If the node is forced open the user will not be able to expand or collapse the item.

Manually setting the item expanded doesn't work

QTreeWidgetItem* last = tree->topLevelItem(tree->topLevelItemCount() - 1);
while(last)
{
	last->setChildIndicatorPolicy(QTreeWidgetItem::DontShowIndicator);
	last->setExpanded(true);

	last = last->child(last->childCount() - 1);
}

Note that QTreeModel::hasChildren always returns {[false}} if the indicator policy is don't show.