yes you are right, the relative works only in the home.
(I mean, the absolute works everywhere, but in the home will not have the smooth sliding effect).
But in the home you use the home position, in all others the primary position.
The results are two menus, so relatives link in home but abosulte in others.
I’ve solved it because I’d like to use a mega menu plugin, that overraid the “sections menu” of onetone completely, unluckly.
I mean, I installed megamenu, that “sections menu” disappears from the homepage.
But I replace it with relatives #anchors in the megamenu, and I’m done.
Then, in the primary, I’ll do the same or different.
But the “sections menu” is sticky. If it disappears, the new one is not sticky anymore.
So yes, I mean the sticky menu, but the megamenu.