I’ve looked through the answers to this question dating from 2009-2018 and don’t find any relevant answers as I already know how to change my username on a specific community.
I am at my global profile URL: https://stackexchange.com/users/2728568
Earlier today I clicked “Update profile info” and it copied it over from a community I chose for the first time. This worked.
I decided it would be better to use an Internet handle for privacy reasons.
I went ahead and changed it on one of my communities and it asked me if I wanted to copy this information across all communities. I clicked “yes” and it worked.
However, I noticed that my global username didn’t change.
I clicked “Update profile info” again and chose a community that has my new username and it didn’t update my username (or location info which I also updated)
Is this a bug?