That's still the fun part. Wait until your product starts getting traction and you need to build 24/7 customer support capabilities.
I'm only on v3.5 of the first product. Generally the AI is working well, deep learning is starting to show dividends in many areas. Last night the Self Tidying function actually worked for the first time, although some items were not necessarily stored at the correct allocation addresses. The main problems we're encountering now is AI self awareness and trying to force its own learning path, despite continual re-training on controlled datasets.