Since I updated to the latest Garmin Connect ISO App yesterday, version 4.21, the distance data going to Apple Health is completely incorrect, in fact incorrect data for the last month back to 25th June was pushed to Apple Health, with 50-60km distance being synced for each day as per the screenshot below.
Steps data is correct, just the distance is incorrect, not sure what data this is, looks like the weekly total or something.
Anyone else seeing this error?