Activity app - Indoor Cycle on Workout app doesn't show up in Activity stats

I've been using the Activity app on my Apple Watch 6 in conjunction with other fitness apps. When going on a run, I've used the Strava app, and after the run my daily stats in the Activity app are updated. But when riding a stationary bike, I've used "Indoor Cycle" in the Workout app, and this doesn't update the main stats in the Activity app ("Move" and "Exercise"). Yet if I scroll down on my watch in the Activity app I see my indoor cycle activity and I can click on that to see more stats. But I would like the main stats in the app ("Move" and "Exercise") to be updated. Does anyone know why those Activity stats don't reflect riding on a stationary bike, and whether there's anything I can do about that? Thanks. (I've also tried using Strava ("Indoor Ride"), and this doesn't update the Activity stats either.