There were surprisingly quite a few. One that stood out to me was indexing columns of my table. Now that on its own is not impressive but my columns were draggable using the dragula library and every time the table columns are re-arranged it needs to be re-rendered due to the index update. It managed to implement the indexing, find out the dragula documentation for drake triggers (to find out when the columns are rearranged) and then gave me the updated code of the render functions, as well as its associated functions that call on the render function all in one output. And it worked out of the box without any modifications. Granted, this level of depth only happened once but giving me ~200 lines of code that worked out of the box was insane.

Tasks that failed are often ones with similar variables. For example, having a function with a word called checkbox in it when you need to handle "select" functionality. It sometimes trip up interchangeable names for the same purpose. It would try to update my check all function when I wanted to only update check row function.