Hello!
Quick problem. When I use a third party editor (let's say JCE), the read more separator works properly. However, If I use the composer, and the block "read more separator", the introtext appears on the article.
I checked my settings, and I already disabled on the post options the fact that the introtext appear on the article, so, I'm a bit confused. I tried some other options, like, disabling the title, and it worked. Don't know if I'm doing something wrong. You'll find on the post an access to my website
Edit : Found another bug. Look at
this article. As you can see on the bottom, related posts appear. It shouldn't be the case, I also disabled them on the post options