gashacon

Les Bessant

WordPress 3.5 introduced a new feature – when images are inserted into posts, the title attribute is not included in the image tag. This was done with the best of intentions relating to accessibility, as documented on <a href="https://core.trac.wordpress.org/ticket/18984" rel="nofollow ugc">Trac</a>
Unfortunately, this causes problems for some Lightbox plugins, quite apart from stopping image tooltips from appearing.
This plugin hooks into the media_send_to_editor filter and inserts the image title into the html inserted into the post.
The original author, LesBessant, sadly passed away and in the meantime the original plugin was closed. I plan to keep the plugin up to date whenever an update breaks it.

IMG Title Restore

Restores the title attribute when images are inserted into posts

Brandon Kraft

Dojo Digital

This plugin allows the author of a post or page to hide the title and it’s containing HTML element from the single view ( is_singular() ).

Hide Title

Allows authors to hide the title on single pages and posts via the edit post screen.

IMG Title Restore vs Hide Title