Nextcloud Hub 5 does not show option to "Create a Talk Room" for Appointments

Nextcloud version: Nextcloud Hub 5 (27.0.2) (Snap)
Operating system and version: Ubuntu 20.04

I have the Talk app installed and I can create conversations without issue. However, I cannot seem to see the option to “Create a Talk room” when configuring an appointment slot in Nextcloud Calendar, as documented here and as shown in the Hub 5 demo video. Both the Calendar and Talk apps are up to date.

Am I missing something here?

Update: Looks like this is a bug?