Crowd 6.0 EAP is out

Hi,

we are maintaining a custom internal plugin for Crowd. When preparing for Crowd 6.0, we are seeing this error

Package com.atlassian.config.util is internal and is not available for export to plugin

Then, the startup of our plugin fails.

The same error is reported by the community for Confluence: Preparing for Confluence 9.0 - EAP out now - #476 by fgrund
A member of the atlassian team responded and said this will be fixed soon for Confluence.

Is this error already known for Crowd as well? Is there maybe already a timeline for the fix?

Thanks,
Jonas