Hi,
it seems that the rich:datascroller component creates a double attribute for given styleClass.
Example:
<rich:datascroller for="notifList" maxPages="6" tableStyle="text-align:left; background-color:red;" reRender="notifList" styleClass="notifListDataScroller"/>
<div class="dr-dscr rich-datascr notifListDataScroller" id="notifsListForm:j_id82" class="notifListDataScroller">
With the same version I'm able to see my class applied to table not to the div.. And no duplicates.. very strange..