Anyone else having this issue on Galaxy S7? I would just be looking at an app (or even just on the home screen), not touching the screen at all, and suddenly the buttons on each side of the home key light up and I feel a vibration, as if I had pressed them. Then the phone goes into split screen mode. This happens several times a day. The phone acts as if I had done a long press on the multitasking button... Don't know if it's a software bug, or if it's a hardware fault and I should return the phone?