New group - Unable to save 2010 workflow

We figured the root cause of the issue in our case with the help of Microsoft. The cause of the issue is that the ‘Title’ column was set as ‘Required’ on the ‘Workflows’ list of the site.This list is a hidden list and when any column is set to ‘Required’ it prevents major versions of the workflow files to be visible to users and also prevents them from getting published.Also on the hidden ‘Workflows’ list  ‘Require documents to be checked out before they can be edited?’ was set to Yes. This should be set to No

We do not know who modified the setting as user is saying he did not do that change and the site was not a migrated site. We are investigating on that.