It could just be one of the bugs with iOS 8 that's affecting only the iPhone 6/+. Maybe deleting the app and downloading it again could solve that?
I was thinking about restoring the phone. I was actually hoping the upgrade to 8.0.1 might reset things. I don't think you can delete this app because it is actually part of settings in iOS 8. Part of the OS from what I can tell.
I'll probably just try a reset later when I have a moment.
I meant deleting the apps that you wanted to monitor battery usage for, like Facebook, Whatsapp, etc and then see if they show up once you re-download them.
A restore will more than likely fix the issue if it's just specific to your phone but if it's a bug in iOS 8 then probably 8.0.2 will address the issue.
Well the issue is the list doesn't populate at all. Last 24 hours and Last 7 days the list has been 100% blank for me since I opened the phone on Sunday.