Files added to vault without permissions

So we had something interesting happen.  Two users somehow added files to the top level vault, they can not check them in since there is not a workflow. They don't remember doing it of course.  We do not give folder permissions for anyone to add files to the top level vault.

Any ideas on how the files were allowed to be added.  I am in the same groups as these users and tried to add files by template, save, save as, and drag and drop and I would get the error saying does not meet the conditions of any workflow.

Picture of the history,  I don't think I have ever seen a version 0 before.

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