Site crashes after Sourcerer updates then...

I have had this or something very similar happen on three different sites so far. In each case after either updating extensions and then updating Joomla from 4.3.4 to 4.4.0 the site went down with an error on the front end saying that I needed to install the gantry 5 framework (this was the same on all three sites).

On the back end I got the orange error page. After turning on debug, etc. on two of the sites it looked like it was a problem with the Regular Labs Sourcerer plugin so I renamed the /plugins/system/regularlabs and /libraries/regularlabs folders and the site came back up normally. I then reinstalled Sourcerer through the back end and all seems okay.

In this latest one though while updating the site to 4.4.0 I received the same front end errors. Sourcerer was not installed but other Regular Labs Modals was. I went ahead and did the same steps but this time it didn't work. Even after renaming the folders the front end stayed the same (Gantry 5 missing error) while on the back end I could log in but received the error

Class "Joomla\Plugin\System\Skipto\Extension\Skipto" not found

and I could do nothing in any of the menus.

I was updating Joomla remotely via the Watchful.li maintenance plugin in last specific case. I was able to restore from backup but since I do maintenance on dozens of sites I would like to try to figure out what might be happening here. Having the same thing happen on three different sites while or soon after updating to 4.4.0 is concerning. All three were on different servers. One self hosted, one GoDaddy, and one on Hostgator. All were running on PHP8.1.x

Any ideas what might be happening?