Still facing this issue while my FR is sending the Heartrate to my wahoo elemnt bolt2 . Firmware 19.18 is installed.
I've been having the same issue withy Venu 3S, same with my wife. Spent two days with Garmin tech support but they haven't been any help yet, I'll try again tomorrow. I have a video demonstrating the problem and they were supposed to send me an email where to upload it today but 6 hours later and still no email. So frustrating.
Same - I have 19.18 installed and I see it drop off after a few minutes. I'm using a bluetooth sniffer and it's clear as day. It works fine and then poof... stops. If I go back to the watch, it claims it's still broadcasting. If I stop it, and re-start it, I see it re-appear... but then drops off again. Not sure why Garmin can't fix this problem properly.