If I do a manual run and set the timer and then pick an individual zone, it will run all the zones for the set time instead of just the one I selected. If I pick the zone then set the timer, just that zone will run. Bug? I’m running this on the iOS app.
I have seen this issue too. It is annoying and you end up stopping everything and start all over again.
I was told this was by design, so you could set the timer for all zones at once. But there is a water all zones option . . . so I’m not sure.