I've noticed that when I set my 5x hotkey for the down button to broadcast my Heart Rate, it does it successfully for a couple minutes, but then it stops. I have the Garmin Edge 520 Plus to receive the HR and it's on version 2.6. The watch will still be showing that it's broadcasting the HR, but the 520 Plus loses the connection and the little heart icon just blinks. However, if I manually go into the watch settings and broadcast the heart rate (not using the hotkey), then it stays broadcasting and there are no issues.
Has anyone else noticed this?