Expand/collapse icons don't return to normal when hovering out of them if selection behavior is SelectItems

When a QTreeView has the selection behavior set to QAbstractItemView::SelectItems, hovering in over the expand/collapse icons would change the color correctly but hovering out does not return them to the default color.

If the behavior is QAbstractItemView::SelectRows hovering works as expected.

This has been reproduced on Windows.

How to reproduce:

Using Qt Creator load the "Dir View Example".  Then just below QTreeView tree definition add:

tree.setSelectionBehavior(QAbstractItemView::SelectItems);

Run the example and hover over the icons.   It should look like the attached image.