Widget updates likely broken on Oreo due to API changes for background processes.

[justdave]

See https://www.youtube.com/watch?v=Pumf_4yjTMc

Relevant documentation:

O Behavior Change Documentation
Android 8.0 Behavior changes: https://goo.gl/Vo9Cp5
Background Execution Limits: https://goo.gl/efLcV2
Implicit Broadcast Exceptions: https://goo.gl/ZTXAvE
Location Limits: https://goo.gl/iT3PVW

Jobs
JobScheduler Improvements: https://goo.gl/xD9Muk
JobIntentService: https://goo.gl/YkR9T4
Intelligent Job-Scheduling: https://goo.gl/1Gv7TW
Firebase JobDispatcher: https://goo.gl/wYr4o2