I'm having this same issue. Every tab for every blog post (aka "articles" on my site), regardless of the post name or url slug is entitled "articles." I want each tab to have the blog article's name on it. I tried changing the SEO title in our latest article and it still shows up as "articles" in the browser tab.
https://imamediation.com/blog/how-the-wise-use-of-caucusing-in-mediation-can-promote-elegant-resolutions-to-conflict