DNSSEC online signing current status

I see the following lines in the mod_online documentation for a long time:

Known issues:

The delegations are not signed correctly.
Some CNAME records are not signed correctly.
The automatic policy-based key rotation does not work. The rotation events are invoked just at server (re)load.

Is this up-to-date information? Where can I read more about the contents of the problems? Maybe I could take something somewhere to help, write something, test something.