If a number of zones are queued, and you cancel a zone, the start time of subsequent zones are not updated. The result is the system sits idle until the original start time of the next zone is reached, doing nothing when it could be watering and getting the job done sooner.
This happens regardless if you cancel a currently-running zone or upcoming zone in the queue, or whether it’s a preset program or a bunch of zones scheduled on an ad-hoc basis.
It would be great if canceling a zone would immediately proceed to the next zone, i.e., the system recalculates the start time of all remaining zones to eliminate gaps. Kind of like the opposite of the “pause” feature we are looking forward to 🙂