When Mei is damaged and uses Cryo-Freeze (D), while other heroes/minions (idk) are nearby, she earns points for Allied Healing/Shielding on the stats screen. Mei is not healing anyone but herself, so that stat should not increase.
Hey Panzish!
Thanks for the report, we are already testing a fix for this presently, and hope to have it fixed before she goes live! I appreciate bringing it to our attention!