Ever since I upgraded to Marshmallow the ambient moto display thing sometimes turns on when i pick it up or move the phone. It doesn't seem to be the gesture hand swipe over thing but something else. Anyone have any idea on this?
If you open and explore the Moto app, you'll see that the section on Moto Display talks about "Approach for Moto Display", and the page for it has a caption that reads, "Reach for your device to trigger Moto Display". Either gesture works: wave your hand, or reach for the phone.