Styling a QComboBox

[Enygma]

I`m using CSS like:

QComboBox {
border: 1px solid gray;
border-radius: 3px;
}

QComboBox {
border: 1px solid gray;
border-radius: 3px;
}

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By using this code the QComboBox gets an unexpected scrollbar, even if it has 3 items... and by selecting the last item... an unwanted and unselectable blank item also apears after the last item.

I will come back tomorrow with code and screenshots.

Any ideea of why this happens?

Using Qt 4.3.1.