Bug : css inheritance

[patrickaglibut]

Jquery chosen version : 1.1.0
Browser : IE 8
Problem : chosen does not render properly when its under another unordered list with its own css. (Please see image). Im using chosen inside a tab.

here's the css that is causing that error :

ul#tab li
{
display: none;
padding: 30px;
border: solid 4px #ffba35;
}

but if i remove the display: none then my tabs will collapse but chosen will work again.