Couldn't see Username field -
Steps to reproduce:-
1) Navigate to
Jenkins Home page --> Credentials --> Global credentials
2) Click On Add Credentials
3) Username field is hidden under the OK Button. (Check attached image)

workaround:-
select a different option from the 'Kind' drop-down list for e.g. "Certificate", reselect "Username with password" option from the drop-down to see the Username field.

Thank you.