tst_qgraphicsitem fails on Mac OS X

Testing tst_QGraphicsItem
FAIL! : tst_QGraphicsItem::sorting(NoIndex) Compared lists have different sizes.
Actual (_paintedItems) size: 32
Expected (QList<QGraphicsItem *>() << grid[0][0] << grid[0][1] << grid[0][2] << grid[0][3] << grid[1][0] << grid[1][1] << grid[1][2] << grid[1][3] << grid[2][0] << grid[2][1] << grid[2][2] << grid[2][3] << grid[3][0] << grid[3][1] << grid[3][2] << grid[3][3] << grid[4][0] << grid[4][1] << grid[4][2] << grid[4][3] << item1 << item2) size: 22
Loc: [tst_qgraphicsitem.cpp(8284)]
FAIL! : tst_QGraphicsItem::sorting(BspTreeIndex) Compared lists have different sizes.
Actual (_paintedItems) size: 32
Expected (QList<QGraphicsItem *>() << grid[0][0] << grid[0][1] << grid[0][2] << grid[0][3] << grid[1][0] << grid[1][1] << grid[1][2] << grid[1][3] << grid[2][0] << grid[2][1] << grid[2][2] << grid[2][3] << grid[3][0] << grid[3][1] << grid[3][2] << grid[3][3] << grid[4][0] << grid[4][1] << grid[4][2] << grid[4][3] << item1 << item2) size: 22
Loc: [tst_qgraphicsitem.cpp(8284)]