When I have a long number as a user name, BtWarden displays it in exponential format, which is not usable when logging into the website. This is the case whether the Bitwarden inserts it or I copy and paste it myself.
For example, one of my user names is 26401000915470, but Bitwarden shows 2.6401E+13.
In this case the user name is not changeable.
I am using the Chrome extension on MaC OS 10.15.2
I think this is a bug.