(beta) on navbar gets pushed down half way at a specific page width just above mobile shift

Just keep making viewport smaller an smaller, until it happen. Sample width that reproduces: 680px.

Removing white-space: pre-wrap solves it. But then the space between (beta) and OurBigBook.com gets removed.

OK: found out I had already previously solved the same issue with  , redoing the "hack". Every header space has to be  .