Apple Watch 6 connection issue for cycling

Hi,

I’m trying to pair my Apple Watch 6 as a heart rate monitor for cycling but my watch doesn’t show up in the list. BUT if I go to Zwift Run setup my watch is visible in the list and I can connect to it and use it for heart rate. Is this a known bug in Zwift?

Using latest WatchOS and Zwift.

Cheers,
Petri