Unable to accept repository, and team invites. (MEGA-3514)

After receiving email invite to repositories, or teams, the user clicks on the link, and is taken to the login page. They enter their creds, and hit login, and the page just refreshes with empty credential form fields. If the user then tries to login directly at https://bitbucket.org/account/signin/?next=/ with the same credentials, they are able to login as normal.

Workaround 1: The issue only occurs when using an email address. If the invitation is sent to an existing Bitbucket user, the team can add the username directly to the team. If not, the recipient of the invitation will need to create a new Bitbucket account first so the team can add his username.

Workaround 2: Copy the end of the actual invitation link, and navigate to it in your browser: https://bitbucket.org/invitations/repository/