had this issue as well, but mine finally stabilized, however, the battery depleted completely and now it won't boot at all.

So for those of us who have had their battery die in this state, there seems no way to fix the issue. I have tried support, but they want to send it off for a battery replacement. Will need to get a battery with a change long enough to update or to use configurator, but don't like the concept of having to pay for a battery replacement when I was testing an app of the beta as part of the agreement.

Configurator is an option as I have a backup and another machine, but the main machine is not on the beta software. Can someone let me know if that matters, or should the dead Mac still show up in Configurator? So far I have not been able to get it to connect. I have replaced the battery with a known good & Charged battery, but still no boot. Have heard from many others on Reddit that have the same issue on the 4 UBC port MacBook Pro. Surely someone has at least a suggestion?