Topic Questions and Discussions not visible for Experience Cloud Site Users

Visibility of a posted Question depends on visibility to the associated parent record of the question itself. When posting to a Topic in Communities, the User who is asking the Question is actually considered to be the question's parent record.  

In order for users to view questions and discussions related to a Topic it must either be posted to a Group designated as Public or the viewer must have visibility to other Experience Cloud Site Users.

See Control User Visibility in Your Experience Cloud Site for more details on how an Administrator may configure user visibility for the affected Experience Cloud Site.
 

See Also:

Who Can See What in Communities