Last modified: 2014-01-27 11:39:23 UTC
When clicking on the link to Special:Confirmemail in the email, the user goes to a page, which requires the login, if the user is not loggedin the error text 'confirmemail_needlogin' provides a link to Special:Userlogin, but that link lost the confirm code, which was passed as subpage part. After the login the user goes back to the special page without code and gets the button the request a code instead of the confirm text. The login link in 'confirmemail_needlogin' needs to pass the code to avoid this situation. Works when using the 'normal' login link in the right top corner.
Maybe not needed, when the old behaviour (no login required) is restored, see bug 60434 for that.