Isn’t that kind of an edge case? why would someone signing up from github all of a sudden change their mind and start the sign up process all over again?
I’m quite sure that there should be threshold after which the username will be available again (in case your system has created an account which isn’t activated yet) but this isn’t a case that is gonna happen on a regular basis!
and 11 Steps to reproduce?
Would like to add to this, This can potentially be by design too as just in case the Github user changes his mind and wants to sign up again then they would be upset that their username (which was available) has all of a sudden gone unavailable. There can be network issues too in case a user was authorizing and their network went down?>