Unable to view content types in knowledge workflow

Summary:

The content types are not visible within the workflow configuration for your knowledge management system. This prevents you from associating specific content types with the workflow

Content (please ensure you mask any confidential information):

implementing-knowledge-management-with-the-redwood-user-experience.pdf

When I try to save without having content types:

When I'm adding content type, nothing appears:

Though I have content type:

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):