Make sure it's set to a proper module position to display in and set to display for "All" menu items. I don't know why the list view would show it otherwise, but it's possible there's some logic within Joomla that's detecting that, even though it's published, it won't actually be displayed anywhere with the current configuration.
Beyond that, when your site was hacked, did you rebuild it from the ground up or just plug whatever hole was used to attack? It's possible some files within Joomla or other extensions were modified during the attack that's now causing, or will cause, issues like this.
Thanks,
Alex