Follow up to this thread : T4 Megamenu - limit submenu display :
https://www.joomlart.com/forums/d/31534-t4-megamenu-limit-submenu-display/2
I have encountered a bug. I have limited the megamenu to only show the top level of a menu tree. BUT the display still shows a drop down arrow.
AND it requires to click on that menu item TWICE to activate.
http://grimsel.com/joomlart/MegaMenu_bug.png
D.