TopBar problem - distorting on page load

Hi all,

the TopBar stack stretches to many times it’s height on page loading. If the page is refreshed it goes back to normal. It’s only happening on one page (which has little content…).

I’ve set the showing of the full menu to Desktop size, and tried Tablet size, but that doesn’t help.

It’s a new barely started site, here’s what it does:

after refresh it looks normal:

any ideas?

thanks