Why does my screen keep flashing when locked?


AC Question

I'm not sure what forum to post this in but here goes:
Project Fi
Nexus 6
Android 6.0.1 (no updates available)

Ever since upgrading to 6.0.1, when I lock my phone my screen will turn on at random (as if receiving a notification). I cannot ascertain if it is actually attempting to display a notification or not, as when I unlock it, it's about 50/50 on whether or not there is something in the tray. Even in Do Not Disturb mode this is happening with a frequency that is quite obnoxious when I am trying to sleep as I use a wireless charger and this lights up the room.
I have turned all notifications as of last night and here I sit watching my phone screen oscillate between dark and light when locked. [edit by Mod]?
Last edited by a moderator: