QChar::Nbsp results in a word wrap

Do:

• I added a QGraphicsTextItem to a scene.
• That QGraphicsTextItem has a QTextDocument that contains "first'Nbsp'second third".
• I used setTextWidth on the item to ensure the text needs to be wrapped.
  See:
• The text is wrapped between both 'first' and 'second' and between 'second' and 'third'.
  Remarks:
• Qt 4.8 does this correctly.
• Using QTextDocument::drawContents leads to the same result.