Since the 28.33 software my Garmin speed sensors and cadans sensor keep on connecting and disconnecting constantly. The batteries are good. Sometimes after a reboot it goes away, but comes back sooner or later.
I had this problem yesterday, having replaced the battery and moved my speed sensor from an older bike to a newer one. My Edge 1050 kept pausing, then I'd see the message that the speed sensor was connected. I finally disable the speed sensor. The sensor was already known to the 1050, so I'm pretty sure I just changed the name to reflect the change of bikes and assumed it would work. When it was on the older bike three weeks ago, I got a low battery message the first day I rode it, and it was dead for the second and third day's rides.
I followed your instructions, so I'll see if it's OK when I ride today.
Have you noticed any impact on reported speed during this issue? I have noticed some weird misreported speeds during very flat open and consistent speed group rides. https://forums.garmin.com/sports-fitness/cycling/f/edge-1040-series/424864/garmin-randomly-misreporting-speed-28-34
What if any behaviours have you noticed on reported cadence?