GeoffMC
In both cases, there was enough expected generation + battery left to cope with your 12kWh daily usage.
The battery target would have remained on the SOC if it weren't for a small multiplier (1.2) that we apply to the current SOC.
More details on the calculation here with a link to a spreadsheet as well: https://community.wonderwatt.com/d/7-how-is-the-solar-forecast-calculated/55
We'll have a look and see if we can get the personal solar yield correction factor in the Advanced settings too.
But generally, the main variable here is cloud cover forecast for your location. And that is far from correct a lot of times.
An additional way of counteracting this is by inflating your daily use by a few kWHs.