I have now run the OpenSprinkler for several weeks since the update.
There is still an issue on the weather retrieval. In particular, it looks like there is a large delay on the rain retrieved from the weather service and the reality.
For instance, it rained on Saturday here. On that same day and Sunday, there was no rain reported by the diagnostic in OpenSprinkler system status, despite saying that the call to the service was successfull less than a couple of hours before.
Yesterday on Monday the weather was super dry and hot… but weather Service shows rainfall pretty high (successful call to the service one hour ago).
It looks like the rainfall data is always 2 days old at least. I have experienced this behavior consistently for the last weeks since the update.