I've recently done a multisport activity with latest firmware 16.22 and auto transition feature enabled.
Everything was ok except the elevation recorded that was 0 for all splits (swim, bike, run). Here below the elevation chart for the bike split.
After the activity, altimeter was stuck on the same altitude. I have rebooted the watch and now altimeter is working again.
Any guessing of what happened?
Looking at the elevation chart of the activity, I've noticed that elevation chart starts with the swim activity (below the chart after elevation correction made in Garmin Connect)
while another multisport actiity, registered on the same exact course one year ago but with a Fenix 6x Pro, doesn't show any elevation chart (see below)