QTreeWidget::setItemWidget() - item disappears after moving item

[ChiliPalmer]

The Doc says the tree takes ownership of the widget, not the item.
So did you try taking the widget before moving the item? Something like:

QWidget* widget = tree->itemWidget(index, 0);
tree->insertTopLevelItem( newindex, tree->takeTopLevelItem( index ) );
tree->setItemWidget(newindex, 0, widget);

QWidget* widget = tree->itemWidget(index, 0);
tree->insertTopLevelItem( newindex, tree->takeTopLevelItem( index ) );
tree->setItemWidget(newindex, 0, widget);

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