i have google pixel. running alpha-5 after update last week.
The main estimote scanning app cannot find beacons anymore.
Also the sdk does not find beacons.
I tested on nexus 5 and everythng works on that.
Just an FYI
Hey @mssdev1
You probably noticed that, but FYI we released alpha-6 two days ago with support for 8.1 
Regards,
Paweł