Hi,
I renamed my Username few months ago without getting specific troubles. My username was User:Agamitsudo and became User:Benoît Prieur (my real name).
But I got a related bad consequence at the Data dump level. Dump are exploited to generate this list for example https://fr.wikipedia.org/wiki/Wikip%C3%A9dia:Liste_de_Wikip%C3%A9diens_par_nombre_d%27%C3%A9ditions
In that dump you can see appearing my two usernames ("agamitsudo" and "Benoît Prieur") while only the new/last one should be visible (there is a balance of something like 20.000 edits still affected to agamitsudo. It should not).
Do you think that bug is easily fixable?
Thank you :)