I have the same problem after update Evolve theme. Using Firebug I notice that this new version of the theme seems to add a CSS rule like this :
.widget-content { font-size : 13px !important }
So everything inside a div that has the class widget-content will get 13px font-size. Inside Firebug, if I remove !important, the style of each tags inside the tag cloud get their real size.
But I don’t know where I can remove this rule inside the theme. Any idea ?
Thanks.