What is the exact issue? I have issues with complications all over the place, for instance the Heart rate one stops updating soon after I leave the app, I believe because WatchOS flushes it from memory. That's a major change in system architecture in WatchOS 10, now one can't pin 10 apps to the app switcher. I suspect your problems with the Weather app may also be rooted there.Hope beta 3 fixes the weather complication breaking and needing to switch it to something else and back to fix it.