Hello dear developers,
if you can and have time, please would kindly invite you to
code-review a pending cumulative patch for Extension:RSS https://gerrit.wikimedia.org/r/#/c/3925/ Up-to-date documentation https://www.mediawiki.org/wiki/Extension:RSS incl. bugtracker links.
This latest version is fully working for me on all my wikis, but waits for code-review until it can be deployed to Mediawiki.org . An older, outdated, and buggy (in the sense, that not all kinds of feeds are supported) version of the extension runs there.
Tom