I updated my pure Moto X to Lollipop yesterday. It's had a weird screen off effect since the update but I'm not sure if it's a Lollipop feature or bug. There are white dots all over the display when the display turns off. I have reset my phone to factory settings and skipped signing in the second time around to make sure it's the phone and not any of my data or apps. Is this normal on Lollipop?