hi
i use default mainmenu.
and i can confirm, i have tried again, disabling joomsef makes the parent menu (separator) act normal (-> not clickable), enabling joomsef with default settings makes it become clickable and link to homepage, then leaving joomsef enabled and setting "Set page base href value:" to "no, disable base href generation" makes it become normal again ( not clickable),
i happened to find on your forum a topic with the same problem (except that, instead of using separator, the customer was using # link, which has the same effect), and someone of your own staff told him to change the option to "yes always use SEO url..." which solved his problem (unfortunately to solve mine i have to chose another option, but in the same parameter), so i don't understand why you say this parameter has nothing to do with this behavior as someone from artio himself told to do that... that's how i happened on that "solution", i didn't spend my day changing each and every parameter... :-p i'll try to find this topic again so you can talk about it with the staff member who showed this solution.