UPDATE – 4 June 2:00 CEST
We continue to work on this issue as a top priority, and expect that work on a fix will continue into next week. Because of the nature of rated PvP, bugs can result in an unfair competitive loss, and we want to be extra-cautious in testing our fix.
We will let you know as soon as we’ve finalized the solution to the issue.
Thank you for your patience and understanding.