All my workouts are based on running power targets. I have created these workouts in Garmin Connect and they work on my Garmin Forerunner 245. Yet today, when I try to edit a workout on Garmin Web, although it starts with the intensity displayed for an interval (eg 268-282W), it changes to no intensity target and there is no option to include a power-based intensity target.
I upgraded my Garmin watch earlier this year for the express purpose of being compatible with Stryd and allowing me to create workouts like this, so it could not be more unwelcome and inexplicable that the functionality suddenly vanishes.