I set the activity subtype to Cooldown and save the changes. After reloading the activity page, the subtype is correct and is equal to Cooldown. I even checked that the sub_type field in the JSON response is equal to COOLDOWN. But when I navigate to main page (calendar view) activity becomes a normal activity and I see "sub_type": null in json response
This was an interesting problem. You have Strava and Zwift connected with “Update Strava name and description” ticked. So when you edit the sub type Intervals.icu calls the Strava API to update the name etc. there. When the updated activity came back from Strava, Intervals.icu was seeing “commute=false” and wiping out the sub type. Anyway it is fixed now and will be deployed Tuesday AM (GMT+2).
@david sorry to mention it, but this still does not work. I change the SubType to Warmup/Cooldown, and after a while the SubType resets to zero. Examples: Intervals.icu, Intervals.icu