I always say that computer science is "a lesson in humility" (I don't know if the expression is right in English).
Computers are usually right and problems are PEBKAC ("Problem Exists Between Keyboard And Chair")
Just in case somebody else arrives to this post, in this case the problem was me.
I made a exact replica of a production site... including cron calls. The article was reviewed in production, but not in the clone site... so reviewer get a request notification.
Thanks Alec for your help,