Hi
I have read through many, but far from all post on this s&s, and can chip in that I have same problem. I have had a 2017 mk3 Jazz for 1.5 years now and got problems with s&s working randomly all the time. Approx 30% it stops fine, at red light 70% it does not stop, even when all conditions should be ok.
After some trials, the authorized dealer+service center replaced the battery to a new one and had it checked and tested based on Honda guidance many times, but never really solved it.
I drive across Denmark every week, and even when I drive 360km in one go, it still does not always stop when I reach a red light close to home or in the other end.
I'm sorry to say that I'm an experienced electronic engineer and have tried to understand this and get experience of when it works and not work, but after 1.5year it still does not reveal any consistency other than not stopping when engine is cold, which is according to expectation. Warm engine, warm/cold weather, long/short drives.
I have now just accepted that it has it's own life, and forget it. Naturally there is a sensible reaction based on some sensor facts and/or timing, but it is apparently just not easy to identify.
Not the end of the world, but naturally somewhat annoying when you want to reduce your carbon footprint and save some expensive drops of fuel. Jazz S&S RIP ;-)