Adding a line break to blog title

To add a line break to blog title, you can follow these.
#1. First, edit blog post title, use <br/> tag

we will have

#2. Use this code to Code Injection > Footer

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
  $("h1.blog-title a, div.blog-item-title h1, a.summary-title-link, h2.item-pagination-title").each(function(){
    $(this).html($(this).text());
  });
});
</script>

Result

#3. <br/> tag will appear in browser address bar.

You can click on blog item > Settings

Click SEO > Enter new blog item title in SEO Title