Yes, I experienced it with my 2011 when someone started to move into my lane on the freeway and my only chance to avoid an accident was to hit the brakes hard because there was a sound wall next to me with only a narrow shoulder. I avoided an accident, but was very surprised that the car continued full on ABS-engaged braking with my foot completely off of the brake pedal. In desperation I hit the accelerator to avoid being rear ended and that caused the brakes to release. During testing in a safe area, I found that the brakes will release after some time delay if the car is traveling at moderate speed (perhaps 40 mi/hr or less), but the brakes will remain applied to a full stop if the car is moving at highway speed (say 55 mi/hr or higher). I was not able to conclusively determine the exact threshold speed. I complained to my dealer because the car was only a few months old at the time. Their technician was able to experience it in my car, but not in their demo so they were prepared to replace parts until Nissan told them it was normal. After they reluctantly returned the car to me without repair, I did some additional testing and confirmed that touching the accelerator will always cause the brakes to disengage immediately (regardless of speed). The 2015 is somewhat less sensitive than the 2011, but it still has the ridiculous, unsafe "safety" feature. Note: Nissan calls this "Brake Assist" and I really wish there was a way to permanently disable it.
Silver LEAF 2011 SL rear ended (totaled) by in-attentive driver 1/4/2015 at 50,422 miles
Silver LEAF 2015 SL purchased 2/7/2015