use "OstackBlog" theme
And I found a problem with SEO, which is that users' photos do not have a title
Probably the cleanest way to do so is not really to do so at a theme level but rather at a plugin level.
You can create a plugin with an override to apply on the qa_get_avatar_blob_html() function. You can copy/paste the content and rewrite it according to your needs (removing the first lines of the function, of course).
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April 20, 2021: Q2A 1.8.6 released!