I’m having a similar problem and I’ve looked through the forums for an answer with no success.
The problem is when I add a post to https://www.nancyalvarezwrites.com/category/newsletter/ the link in the body of the post doesn’t work. The text “First blast from the Nancy Alvarez newsletter, April 18, 2011” should be a link but it only works if you click on the post title link and get to the https://www.nancyalvarezwrites.com/little-nancy-blast/ page. I don’t mind if the title is a link I just want the link to work in the body of the post.
I think it’s a permalink issue but I’m not sure how to resolve it. Can I change the permalink settings to default for this one case or will it effect all links sitewide?