I could not find this but a few old threads that talked about an update fixing the issue.
I have two controllers on my app, one works as I think is normal. When a watering day is scheduled the rain drop shows up on the scheduled day in the events tab and if it is canceled it is orange with a slash.
When looking at the other controller when a day is canceled for rain the drop is just not there.
The issue is with a new regular controller the other is the pro controller. Not sure if that makes any deference.
Thanks, I will continue to monitor and see if it it changes.