ComboBox inside Menu Unable to select text on TextField

[DTT_11-1983]

Try on this link:

http://www.extjs.com/deploy/ext-3.0....enu/menus.html

Click on Button w/ Menu and type some text into the ComboBox. The TextField is unselectable.

[Animal]

What doesn't work exactly?

I find it working fine:

[DTT_11-1983]

Sorry for late reply, It does not work on FireFox3 (my current version is Firefox/3.5.5).

.x-menu-list-item {
-moz-user-select:none;
display:block;
padding:1px;
white-space:nowrap;
} 

the -moz-user-select:none; cause the problem but I dont know how to remove it.
Thanks