I just downloaded the trial last week and looked at this example: http://localhost:50335/razor/web/combobox/index
In Firefox 28.0 when I scroll down a bit and then click on the combo box it opens and closes immediately (it`s impossible to select any items). The drop down menu only stays open when I scroll to the top of the page. The same happens with other controls that use a drop down menu (i.e. DropDownList, DatePicker, ColorPicker) and of course it also happens when I make my own ASP.NET MVC page.
The problem only exists in Firefox. Chrome and IE 11 both work fine.
Is there a fix available for this?