Search bar has no magnifying glass

At first sight I liked the Twenty Nineteen theme. It’s clean and it has almost no features so one can customize everything using plugins. I like that.

What I really don’t like is the search button. It’s a big separate button instead of a nice looking and intuitive magnifying glass on the right side of the search bar. I think 99% of the websites has an intuitive magnifying glass on the right side of the search bar. Unfortunately not Twenty Nineteen…