Case Worker cannot edit case

Summary:

Case workes are unable to edit cases all of a sudden. I checked all the permissions and privileges and they have the correct rights. I have a list of case worker dummy accounts that were able to edit cases and now the edit button has been removed?

These are the permissions given to each Case worker:

Content (please ensure you mask any confidential information):

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

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