Hmmm. Odd.
I just tried it and had similar results. NULLs until back to April 3
I was thinking that was around when I last upgraded, and since I always do a db:migrate after I update that maybe that was what was needed.
But no joy.
Then I worried that maybe something broke with the upgrade. So I checked using different user ids.
One had NULL back only 2 days, and another had no NULLs at all and was up-to-date.
Very puzzling.