We're running an internal migration of all old players' stats to our new highly advanced statistics tracking backend. This means that stat changes will be a bit delayed while we ingest this huge backlog of data. Nothing is being lost, it'll just take a bit longer to show up in the in-game UIs.
wanna this the video
https://www.youtube.com/watch?v=3LrEAL1b6Qg
skip to 2 mins in