Menu Items Jumbled Up

Hi all,

I’m using BB Plugin & Theme. I’ve got a problem which keeps getting displayed wrong, sometimes it’s fine other times it’s not.

I originally had it as Nav centered and nav right upon Fade In but the fade in would only display correctly about half the time (instead showing as it is in the screenshot). I thought I’d keep it as nav right to solve it which looks great in customiser, but as soon as I publish and go to the main page it looks like the screenshot.

Could anyone help please?