Originally reported here: https://wordpress.org/support/topic/issues-with-search-function/

When we generate the page titles using primer_the_page_title(), we are passing the title back through esc_html(). This causes issues when generating the search results page title and the archive page titles, since both of these locations wrap the results in <span></span> tags.