This would be a great feature request. A feature that allows for you to automatically update your username and profile picture without having to log back in while also being able to keep it manual like it is currently.
Hi, thanks for the report, and apologies for the inconvenience! We weren’t able to reproduce the issue, but we made a fix for a potential suspected cause for usernames not showing the updated name properly. Please do feel free to ping us if you are still seeing this issue in the future.
I don’t think this applies to the issue you reported, but for additional context, the website has a short local cache for usernames. Refreshing the tab after ~5 minutes or opening your profile page on a new tab should show the updated username.