So I've been using WordPress for years but never experienced this before.
I added a new user to my site, as "author". When he published his article with images included, what happend was that despite every singel image having its own unique title, alt, caption, and description, once they were published, all images display the same title as the headline.
I cannot figure this one out.
I haven't updated any plugin lately either.
The link url is set to "none" on all of the images.
Upon inspection, in the HTML, all images have the correct alt and caption text.
Also, it doesn't happen when I publish posts myself in the same way.