They seem to get lost a lot, even when there are plenty of places left to explore they don't seem to want to. I think someone(Gazebo?) changed their willingness to explore ocean terrain, which probably was a good idea, because scout running out into the ocean trying to explore with their extremely limited range was kinda weird. But this also leads to you having to manually send them to new islands or buy boats (which is impossible if you're inland).
Automated workers also seems to get extremely lost, had one running back and forth between 2 finished improvements and 2 improvements that other workers were building for about 15 turns before it got bored and started building a tradingpost. Automated workers also doesn't seem to have any interest in building roads had one game where I as an experiment didn't manually build any roads and just kept all workers automated (had like 16 of them on 7 cities as well) and by the time I quit that game at about 300 turns in (standard speed) I still didn't have one road built at all.