Running iOS 8.1 on an iPad mini, Yosemite on an Air, and 8.1 on a 5C.
For whatever reason, the 5C has stopped syncing reminders to/from iCloud. Works fine between the iPad and Air.
So far I've tried disabling reminder sync on the iPhone (not entire iCloud), and rebooted. When I open Reminders now everything is gone (expected) but none of the lists sync down. Reminders is stuck in a state where the only visible button is the "New List +" section, which does not react to taps.
If I turn off sync and open the app, I'm presented with "New List +" and a default empty "Reminders" sheet.
Any suggestions would be greatly appreciated.
Potentially related: iOS reminders app not syncing with Yosemite