Alright, clicking account icon → Login does help. Another annoying thing is that the banner is displayed only after you do that 
. While you are authenticated, but before clicking that another Login thing, the banner is not displayed .
Anyways, while I was writing a ticket, I checked the sources again and found that this not-null schema validation was reverted altogether, and is not present in 7.2.2 anymore . @beikov if you like I can still log a ticket, but I don’t see much value in it anymore, as 7.2.2 behaves exactly as I would want it to, i.e. “treat generated fields as not nullable for schema validation purposes“ or just “do not perform not-null schema validation on generated fields“.