Chart UI: scheduled rewards line veers through zero through a payout event

[patrickwoodhead]

When scheduled rewards become a payout, the chart UI looks a bit strange:

Ideally, the scheduled rewards line would merge into the top of the payouts and then continue on, rather than jumping down to zero on the payout day, and then back up the next day.

[juliangruber]

This might be a race condition or timings issue 🤔 Here is how it looks for me:

I will try to reproduce