Retroratchet UI suggests "0" for an eep day but requires value of ≤1


#1

Screenshot is from https://www.beeminder.com/mattepp/water


#2

Note for future searchers:

At present, owing to technical limitations, you can’t retroratchet to 0 the day after a derailment.

The UI should display this consistently, of course, and not suggest a zero when it’s not possible!