http://issues.umbraco.org/issue/U4-1947

Description

If you schedule publish a node and then after it has been published, unpublish it, it will automatically keep re-publishing itself because there will always be a release date for a node of that ID and the query in ContentService.cs is incorrect. It does not take in to account version ID or newest boolean flag.

Steps to Repro

1. Create a node (or use an existing)
2. Set scheduled publish date/time
3. Wait for it to publish
4. Unpublish that node - manually by pressing unpublish button
5. Observe after a minute or so republish on the next run

Umbraco.Core.Services Content Service - Line 336

public IEnumerable<IContent> GetContentForRelease()
{
   using (var repository = _repositoryFactory.CreateContentRepository(_uowProvider.GetUnitOfWork()))
   {
    var query = Query<IContent>.Builder.Where(x => x.Published == false && x.ReleaseDate <= DateTime.Now);
    var contents = repository.GetByQuery(query);

    return contents;
   }
}

Prospective Fix

Ensure queries for Release take in to account the versionID or newest bool flag on the node.