We are temporarily disabling Mei to address a bug with her Ice Wall ability that allowed heroes to reach unintended locations when used with their abilities. We are working to address these issues as quickly as possible and aim to bring Mei back in our next upcoming patch which is set for November 15. Thank you for your understanding and patience.
As a reminder, our Blizzard In-Game Code of Conduct specifies that exploiting in-game bugs to gain an unfair advantage is considered cheating and should be reported using our reporting tool in-game. Thank you for helping us keep a fun and fair experience for all players.
UPDATE: Mei will be re-enabled when we release our patch, which has been delayed. Click here for more details.