Board Thread:General Mod Discussion/@comment-26428291-20160323061657/@comment-26236093-20160323093020

AlteOgre wrote: That's not generally applicable as many plugins and some mods didn't use UUID registration for all of their functionalities. I assume Mevans adopted UUID registration in early 2015, possibly earlier.

Indeed, altering a Username can certainly have affect when one is using certain plugins, as I myself have experienced.