ok it did it again today, similar to yesterday morning, when my range was around 30 miles on the GOM (today was exactly 31% also, i looked on the % gauge). I was going down a hill and felt the regen fall off and the car would only regen at 10 while coasting down a hill.
i threw leafspy / obd dongle at it when i got to my destination and this is what it showed me before i shut the car off (this B-mode dropout happened half a mile from my destination).
this definitely did not use to happen during the winter when i was driving it to work and back and getting the range below 30 on the GOM.
going to start googling those codes now.
PS, after completing my visit and getting in the car, i drove home with B mode with no problems, (about 10-15 miles), so powercycling took care of the bug / lockout.