BBGW v1.1 won't power down

I just took delivery on several BBGW boards, and noticed that they are now updated to version 1.1. The board appears to have been significantly redesigned. Unfortunately, they won’t power down on command, and instead immediately reboot. This is true of all versions of the kernel I have tried (stock 4.4, 4.19, and 5.10). Has anyone else experienced this? Robert Nelson posted on the beagleboard forum that he has ordered some and will take a look.