Ok, so, yes, it would have watered above field capacity, which is ok, your soil should reach filed capacity after a day or 2, what the scheduler is trying to do is reach your available water capacity which is 6 inch * .15 = .9 inches of water your soil can hold, based on the second set of images you have posted, your mad is at 80% so the amount of water to be put out is .9 * .8 = .72 inches of water. I can see percip rate so I can’t really work any further.
Is this the same zone in question because these 2 graphs don’t line up with each other, it seems.