It appears you cannont "Start Quick Charge" if you are in a Peak Shaving time block. This seems this is a bug. Imagine it's middday and we're in peak shaving, and a storm is coming, so I click "Start Quick Charge".... nothing.... I have to disable Peak Shaving first to get the "Quick Charge" to kick in.
This seems to be a bug. Quick Charge should just start... regardless of peak shaving.