Problems with scroll in QListWidget

Hi, I have problems when I put a QWidget inside QListWidget. I use QListWidgetItem and join a QWidget using setWidget. If I put too many items and will need a scroll, when I scroll, items are bugged, i try to use the update() in list or/and itens, but not work.... I had this problem with QTableWidget also....


Suggestions?

Thanks

I forgot the most important, the scroll does not work only within the QGraphicsProxyWidget within a scene out of the scene it does not bug....