Modifying QGraphicsItem which is not part of a view, causes increasing memory consumption

When QGraphicsItem (QGraphicsTextItem in this scenario) is part of a QGraphicsScene, but the scene is not attached to a view, modifying the Item's geometry, contents or anything that requires redraw, increases memory consumption.

This is caused by line:
d->updatedRects << rect; (QGraphicsScene.cpp@3198)

In this specific use-case, the scene may never be attached to a view, so the updatedRects QList is never cleared.

Steps to reproduce:

• Run attached sample
• Observe memory usage
• EXPECTED: Memory usage does not increase at such high rate (if at all)
• ACTUAL: Memory usage increases a lot indefinitely