Author: simon.white
Description:
The old (non-js) implementation of ChangesList provides a hook known as OldChangesListRecentChangesLine, which allows extensions to manipulate the rendering of a line of rc output. Today on master, this is at line 682 of ChangesList.php.
The new EnhancedChangesList does not provide a similar hook. This means that it would be difficult if not impossible for extensions to cleanly move functionality across from the old recent changes list.
At present, the obvious available work-arounds are to either patch the hook/behaviour into ChangesList.php, or to prevent users from using the enhanced recent changes list with $wgHiddenPrefs.