I rode a workout where I had three wattlevels as an interval. 20 x (165w, 185w, 210w). After about interval 8 it stopped adjusting and kickr was at 165w constantly. Target on the display said 185w or 210w but no adjustments happened. Even manual adjusting +/-5 did not help. Pause/resume did not help. I did a power off to restart the workout, then the workout plan was gone from the unit??? It only said "Rest day".
Just a minute or before I noticed the "freeze" I got several messages about device connected (gear, trainer, power).
Solution: Found my Wahoo Bolt.
When reading all bugs I suspect Garmin has put to much into the units and lost control of development. A bugfix here and a bugfix there will always lead to a mess. I don't trust the unit anymore and are strongly considering just to sell it. It's not worth all the frustration.