Fenix 5x Software 15.1 also breaking Bluetooth

Hi 

I have to reconnect/pair my Fenix 5x and iPhone X with latest iOS to GCM about 20-30 per day. 
I can’t figure out if’s the watch or the app that is the problem, but I seem to notice that it happens when the phone switch WiFi network, or looses WiFi, or even switching between WiFi nodes  

To reconnect I have to force quit the app, and then go to settings on the watch to pair them. 
This was a problem before 15.1 too, but now it’s a big problem.

Sadly the watch is no longer a smart watch, just a watch...