[META] Karma for last 30 days?

Has any­one yet men­tioned or re­ported that for the last cou­ple days, the “karma for last 30 days” is show­ing zero for ev­ery­one? And that we no longer can see the top con­trib­u­tors for the last 30 days ei­ther?

Do we have an ex­pla­na­tion or es­ti­ma­tion for a bugfix on this?