Creating anonymous CalDAV/CardDAV collection account, contains no CalDAV/CardDAV sub-accounts
I start a new “Collection Account Wizzard”. As “email address or user name” I fill nothing, as “Advanced option/server name” I fill milter.aegee.org. The wizzard finds CalDAV and CardDAV sources. I name the account later and complete the setup.
Afterwards in the “Edit Accounts” dialog I do find the newly created collection account, but it contains neither CalDAV nor CardDAV subaccounts.