problem with Vaadin 23 - combobox component

Question

I have a problem with new Vaadin 23 and Combobox component:

combo.setRenderer(LitRenderer.<Model>of(
                "<div>${item.getNumber}<br><small><i>Qty Certified in Stock: </i>:${item.certified}</small></div>")
                .withProperty("heatnumber", Model::getNumber)
                .withProperty("certified", Model::getQtyStockCertified));
comboHeatNumber.setOpened(true);

Don't work. I have to remove the renderer to make it open without clicking.