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How do I display the hub title in the browser on child pages when using WordPress SEO plugin?

If you're using the WordPress SEO plugin it will overwrite the theme settings for how the page title is displayed in the browser. You can adjust the title display from SEO > Titles & Metas.

To add the parent hub title to hub child page go to SEO > Titles & Metas > Post Types and in the Page text box replace the existing code with:

%%parent_title%% %%title%% %%page%% %%sep%% %%sitename%%