Frame height not adjusting when adding Extended Menu

Hey guys,

I added a new menu option to the MenuRoot called Multi-Edit Grid which has an action of runtabgroup. Of course that isn't important. My problem is the frame height is not adjusting to show the new menu option. I see when I inspect the element that the rows attribute for the frameset is being set to "70,0,114,*,0". If I open up the developer tools console and run the following command "document.getElementById("FIRSTSET").setAttribute("rows","70,0,140,*,0")" the new menu option now displays. Does anyone know how to fix this so that new menu options appears without doing any black magic? Is there some sort of setting that I need to change? Thanks.

<frameset rows="70,0,114,*,0" topmargin="0" frameborder="1" leftmargin="0" marginheight="0" marginwidth="0" border="0" id="FIRSTSET" framespacing="0">