Corno workout incorrect when synched to Garmin

I had the Corno workout in my training plan and decided to do it outside. It was tagged as “Achievable”.

The description on the web site says (for both inside and outside mode):

Main set as 4x8 minutes at 95% FTP with 10 minutes easy between intervals.

However the workout that was synched to my Garmin had 4x13 minutes intervals instead of 4x8 minutes.

I replicated this by scheduling it for another day with the same result. So there seems to be something wrong with the “Outside” version of this workout?

Unfortunately I didn’t read the description beforehand, so this sure felt anything but achievable on the road today.