This page has two <title> tags in the HTML:
<title>First Title Tag — Contact Us</title> <title>Second Title Tag — About Us</title>
Browsers use the last one. Google's behaviour is undefined — it may use either or rewrite both.
The fix: remove the duplicate so only one <title> exists.
Check the page source (Cmd/Ctrl + U) and search for <title> —
you will find it twice.
Common real-world cause: a CMS injects a title tag from the template AND the page content block also has one hardcoded. Neither developer notices because the page looks fine in the browser tab.