Bug was injected in Garmin Connect during activity type update. If activity type is set to "Windsurfing" then speed unit's are set to knots regardless of the device settings. The bug was injected during October 2021, when activity name for windsurfing was changed from "wind/kite surfing" to "windsurfing". This bug affects only "windsurfing" activity. Changing activity type in Garmin Connect to "Kiteboarding" (or other) fixes the issue and can be used as temporary workaround.
Steps to reproduce:
1) Set Garmin watch speed units to kilometres.
2) Record some activity using any built-in tracking application.
3) Load activity to Garmin Connect and make sure speed is displayed in "kph"
4) Edit the activity and change the activity type to "Windsurfing".
5) See that speed units are changed to "knots".
Expected result:
Speed units for windsurfing activity should match the device settings.