Activity when doing an outdoor cycle

Hi,

Restart your Apple Watch and see if this fixes the problem

How to restart your Apple Watch - Apple Support

Also, take a look at this

Calibrating your Apple Watch for improved Workout and Activity accuracy - Apple Support

Also ensure that both your watch and iPhone are updated to the latest software versions.

• Update the iOS on your iPhone, iPad, or iPod touch - Apple Support
• Update your Apple Watch - Apple Support

More information:

Track workouts and stay healthy with Apple Watch - Apple Support

Use the Activity app on your Apple Watch - Apple Support

Get the most accurate measurements using your Apple Watch

Yes it can do that. It bases exercise minutes on previous workouts. I would just recalibrate your activity settings. And try again