So I updated to the latest MB and MB AIO to try out the new Blocks/Views Json. I can get it to work on one site, but any site that runs Bricks Builder or is a multisite, I get errors that prevent me from moving forward.
Thank you for your feedback. I've escalated this issue to the development team to fix the issue. You should add at least one field to make the field group work when selecting "Block" location.
Yes, I did figure that you the other day when testing, but it would be nice to not have an error if there is no field. But thank you for sending it along to support.