If I change the language of my page from NL to UK or visa versa, my header layout changes.
I tried to compensate with custom CSS, but if I have changed the UK version to look the same as the NL version, than the NL version look also totally different.
I would like to have the header version of the NL version also be visible for the UK version.
However, it will still drop down once it runs out of space. You can combat that by increasing the mobile menu breakpoint in Customize > Layout > Primary Navigation.