The extension [1] changes the RC view so that any changed article is
only listed *once*.
A new *option* on the preferences "Recent changes" tab is added which
allows users to have
- each change (default) or
- only the most recent change per changed page
shown in the RC list.
Code on GitHub, see [1]
(request for MW extension repo is filed on
https://www.mediawiki.org/wiki/Git/New_repositories/Requests )
[1]
https://www.mediawiki.org/wiki/Extension:OnlyRecentRecentChanges