Build 207 - Zones connected to core have disappeared [resolved]

After updating to 207 and relaunching all of the zones connected to my core have disappeared.
Also, on Audio Setup I only see my networked zones - the section of zones connected to core is completely missing.

I’m physically on the core, not using a remote.

Any ideas?

Restarting the computer solved it.
(Only restarting Roon didn’t help)