I've discovered a bug where the Meta description isn't being used for the twitter:description meta. This appears in the latest version and back to at least 5.2.10.
In administrator/components/com_easyblog/includes/twitter/twitter.php, line 69:
// Retrieve the stored meta for the blog post
$meta = $blog->loadMeta();
// If there's a meta set for the blog, use the stored meta version
$description = !empty($meta->description) ? $meta->description : $blog->getIntro();
EasyBlogPost->loadMeta() doesn't return the meta, but sets it to the instance's meta property. that condition in the ternary will always fail as $meta is null.
A simple change, much like in administrator/components/com_easyblog/includes/facebook/facebook.php:
// Retrieve the stored meta for the blog post
$meta = $blog->loadMeta();
// If there's a meta set for the blog, use the stored meta version
$description = !empty($blog->description) ? $blog->description : $blog->getIntro();