QGraphicsTextItem does not emit linkActivated when clicked [reg].

When the LinksAccessibleByMouse flag is set on a QGraphicsTextItem it should emit the linkActivated signal when clicked, but it does not.
This is a regression from 4.5.3.

Please use the attached example to reproduce.

I also noticed that the item never gets the mouseReleaseEvent. If you override the QGraphicsTextItem and make sure to accept the mousePressEvent the signal is emitted correctly.