I did not know this. That seems to be true. I just checked, and the Nike+ Running app is under the spinner, and I know it's not native from using it. Another thing that can be done is disconnecting your phone from Wifi and bluetooth and seeing which watch apps are still fully functional, but you'd need the apps to work in the first place, in order for that to be effective.
One other way is checking the version history in the watch app store. That is how I knew CNN was definitely native before I got it, because I had just got my watch and I was just starting to put 3rd party apps on it.
That last statement is what I was trying to express to the other guy. You want to narrow things down. Why would you care about what didn't work for a few others if it works for you?
So now you know it's either 3rd party apps, in general, or 3rd party native apps + non-native 3rd party apps which just happen to be buggy. The first one is more likely.
I know this really isn't a realistic solution, but have you seen what happens when you get things working, then reboot the watch without having placed music back onto the phone beforehand? I'm saying this to say I'm wondering what may happen if there is no music there to delete. Wondering if the problem actually comes back.
Also, is your watch on firmware 2.1?
Watch is on 2.1.
I'll have to try your last paragraph test after I get back from business travel next weekend. Not going to screw with things now!