I’m : a web and mobile developer based in the Manning Valley, Australia.

I've been experiencing far fewer syncing issues under iOS 10 and macOS Sierra so naturally thought Apple was getting on top of things.

But apparently it's all still rocket science as we can't even get the correct badge number showing on Reminders on macOS Sierra.

You're right Tim Cook, there are fewer crashes but here's an example of a problem that won't be showing in your metrics.