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Changes between Initial Version and Version 2 of Ticket #27373

-                      initial
+                      v2
 Before 3.7, the presence of the test cookie was only checked in case of an invalid username or password.
+Since [25045], we always check the test cookie before calling `wp_signon()`. This made the issue much more prominent. Here are some scenarios to reproduce it:
+Since [25045], we always check the test cookie before calling `wp_signon()`. This made the issue much more prominent. Some articles even suggest hacking core as a workaround, which induced me to investigate it.
+Here are some scenarios to reproduce it:
 . [http://wordpress.org/support/topic/cookies-are-blocked-or-not-supported-since-update-to-371/page/4?replies=105#post-4907345 "Some proxy/caching servers"] (e.g. Varnish) are configured to not allow setting cookies on GET requests. On a second attempt (after a POST request has been made), user is able to log in.