When having a list of elements in a QComboBox then the combobox dropdown list may be too narrow and only display "..." for some elements instead of the actual element text.

This is reproducible using the example below. Set the fonts to "Extra large" and then run the example on Windows. Open the combo box and see a list of percentages. Note that all items below 9% are only shown as ellipsis.

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	QMainWindow mw;
	QToolBar *toolBar = new QToolBar;
	mw.addToolBar(toolBar);
	QComboBox *cb = new QComboBox;
	for (int i = 1; i <= 32; i++)
		cb->addItem(QString("%1%").arg(i));
	toolBar->addWidget(cb);
	mw.show();
	a.exec();
	return 0;
}