Column 'authProvider' cannot be null

J! 4.1.1
PHP 8.0.16
CB 2.7.2+build.2022.03.22.14.03.47.175c40bd4

I just updated a site under construction to J! 4.1.1 and now there's a glitch in creating new users. Either from the front or back side, when I click Save I get the message:

"Column 'authProvider' cannot be null"

and the form remains open. If I simply click Save a second time, the user is saved. On the back side I'm taken back to the User Manager, and on the front side, the page says:

"You are already signed up with this username and password.
Sign Up Complete!"

In both cases the registration email is not sent. The only change was the update to J!4.1.1. In looking at the DB, it appears that authProvider is a new column in the users table in 4.1.1. If I change it to allow null, then everything works as expected. On first login, the column value is updated to Joomla. I guess this is a Joomla issue, not CB? Or should CB set the value on user creation?

Downgrade to 4.1.0 or wait for 4.1.2 (should be out soon). It's caused by a bug in Joomla's authentication plugin.

Joomla 4.1.2 and 3.10.8 have just been released, that fix this issue:

www.joomla.org/announcements/release-news/5858-joomla-4-1-2-and-3-10-8-release.html

You may have to clear the cache of Updates in Joomla updates to see it there.