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Hi,
That's not a 'bug', but what the Recent Topics block is supposed to do. It will just provide the title of the article and the date.
If you see sites where the News is available with the topic/subtopic in the title and the intro text, they made the News module their front page. Look at XOOPS, check the URL, you will see it has /modules/news/ there. That's because the News is the front page module.
Go to Admin Menu -> System Admin -> Preferences -> General Settings and choose the News Module as front page.