I don’t have a solution, but i’m having the same problems. Up to the point where i almost cannot get my projects done anymore. I’ve had to rebuild a few times, only to find out some other component fails after a while. Live reload is also a mess right now. Sometimes it works, and running an app does not, sometimes it’s the other way around. Perhaps it’s better to switch to older versions of cordova/ionic?
I found a workaround for the live reload problem. Start with ionic run ios --device. After the watcher is ready hit cordova run ios --device. Now the app starts again and also updates after code changes as usual. I think there is only a small problem with the app deployment - but for now this workaround should help.