Unable to signup on twitter.com because the sign up process resets when you home out of Safari to check your emails to retrieve the confirmation code.
Created attachment 397527 [details]
Committed r260684: <https://trac.webkit.org/changeset/260684>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 397527 [details].
Reopening since the patch was reverted in https://trac.webkit.org/changeset/261252.
Re-landed in <https://trac.webkit.org/changeset/261364>.