QGraphicsItemGroup boundRect problem with transformed children

[qlands]

Hi,

I have a problem creating a group from a series of items if one of them has a transformation matrix.

I add the items by:

for (int pos2 = 0; pos2 <= tnkItems.count() -1;pos2++)
     {
         group->addToGroup(tnkItems[pos2]);
     }

for (int pos2 = 0; pos2 <= tnkItems.count() -1;pos2++)
     {
         group->addToGroup(tnkItems[pos2]);
     }

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If the items do not have any transformation group->boundingRect() return the total area of its children. But if any of its items has a transformation matrix , for example scale(2, 1 ), group->boundingRect() return an area bigger than its child items.

Any idea why?

Many thanks,
Carlos.