On edge branch, it looks like anchors are resolved against the website's URL as opposed to the article's.

E.g. feed https://about.gitlab.com/atom.xml, "Website URL" is https://about.gitlab.com/blog/
The last article (https://about.gitlab.com/releases/2022/08/30/critical-security-release-gitlab-15-3-2-released - "GitLab Critical Security Release: 15.3.2, 15.2.4 and 15.1.6") has in its source code:

<a href="#remote-command-execution-via-github-import">Remote Command Execution via GitHub import</a>

Browser's interpretation on the page converts it to https://about.gitlab.com/releases/2022/08/30/critical-security-release-gitlab-15-3-2-released/#remote-command-execution-via-github-import (working), FreshRSS hard-codes it to https://about.gitlab.com/blog/#remote-command-execution-via-github-import (obviously not working)