Did a triathlon recently and the activity did not sync. I initially thought that FIT file is damaged, but instead it's a similar issue to this one: https://forums.garmin.com/outdoor-recreation/outdoor-recreation/f/fenix-7-series/367188/serious-bug-in-16-22-activity-lost-when-being-saved#pifragment-1292=2
Unlike the linked issue - I did not use any navigation (it was a race). In same manner an activity from previous day was displayed as summary. However I could see the triathlon activity in history glance. To fix it I just moved the fit file from TempFIT folder to Activities folder and synced the watch.
Anyone knows how can I report this? Any official reason of fix for this? I'm on Fenix 7S with latest stable firmware.