VisualItemModel clips the visual items when the highlight changes

When When the VisualItemModel changes highlights, the visual item children is clipped (disappears). This behavior is found on the example for VisualItemModel and parallax.qml example. Before, the visual items are still visible after the highlight changes.
This behavior is inconsistent because slightly moving the VisualItemModel doesn't clip the visual items. The items disappear only after a highlight change.

Examples:
$QTDIR/examples/declarative/modelviews/visualitemmodel/visualitemmodel.qml
$QTDIR/examples/declarative/modelviews/parallax/parallax.qml