Broadcast heart rate Fēnix 8 -> my Edge 1050

I'm using my Fēnix 8 with my Edge 1050 to broadcast my heart rate to the 1050. This worked well with my Epix 2. However, I cannot get the Edge 1050 to find the fēnix 8 heart rate sensor. I've tried to enable broadcasting from an activity and standard Watch Settings -> Health & Wellness -> Wrist Heart Rate -> Broadcast Heart Rate, but the Edge 1050 does not see the sensor. 

  • fēnix 8, 51mm Amoled running version 11.59
  • Edge 1050 running version 10.15

Is this a bug or am I doing something else wrong?

Thanks,

 - Brendan