When Special:Preferences#mw-prefsection-rc and enabling "Group changes by page in recent changes and watchlist" and expanding a group, the newest revision in a group links to the diff to "cur", even if there is no newer revision. The latest revision should probably not have a clickable "cur" link.
Example of diff linked to: https://no.wikipedia.org/w/index.php?title=Brukerdiskusjon:Blue_Elf&curid=75880&diff=0&oldid=9559905
Version: unspecified
Severity: enhancement