After hundreds of debug processes, I've finally found the function which is used to do that. Here is screenshot:
the RSS feed from my categories are not showing the last posts... any clues what to do? cant find anything related on the search..
@Leonardo-Galani this plugin is quite good. It won't work with some rss though, you may need to find an alternative rss feed.
It is only temperamental with specific rss feed url's, THE only problem I've encountered....
This should be fixed on master now. Thanks for reporting.