New workflow can't select content type I'm trying to create a new workflow in Drupal. When I click "Content Types" beneath the "This workflow applies to:" section, it loads an empty modal. I have 6 content types but they fail to show.

There is an existing workflow that has the correct content types set. However, if I uncheck one of them, it won't be available if I try to add it back later.

I made a new, test content type. It will show as an option for workflows but the older, existing options will not.

Does anyone have any ideas as to why the content types won't load inside of the workflow editor?
It seems each content type can only be assigned to one workflow at a time.
Try removing removing a content type from the other working workflow, save it, and then adding it to the new workflow.