Lightning Communities - OOTB Component Customization (conditionally show/hide)

The OOTB component for feed and feed publisher do not work unless the URL has a recordId (at least for this use case). If there is no recordId in the URL, the user is presented with a message along the lines of: "Looks like there's a problem. We couldn't find the record you're trying to access. It may have been deleted by another user, or there may have been a system error. Ask your administrator for help."

How can I add some custom dev to this OOTB component? I know how to custom show/hide based on criteria (whether or not a recordId exists) but is that possible with OOTB components? If not, what might be a possible workaround for the time being?