Small problem with combo

Hey there,

I isolated my problem, and reproduced it into the controls-classic.html examples :
For the combo control, I changed the line
obj.setItemText(["Home", "Favorites", "Font size", "Search"]);
into
obj.setItemText(["0123456789012", "Favorites", "Font size", "Search"]);

As the result shows, the combo does not display item 1 anymore, cause too long...
So I tried to change control size via CSS or method setControlsize, but then I get a second column in the combo dropdown, but my first item is never displayed...
When I click the first item, the value is copied into the combo element, so the value is there, but never displayed...

Any ideas would be appreciated