Check your other plugins for conflicts. Such as do you have an SEO plugin? What is the url of the pages in question? Is the theme changing the way the title is used. There are many things that can affect the use of the meta title. If that is what you are asking about and not the wp title. You might also check the permalinks settings.
Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.