Index: src/includes/users/capabilities.php
===================================================================
--- src/includes/users/capabilities.php
+++ src/includes/users/capabilities.php
@@ -359,6 +359,12 @@
 	// Get the current user's WordPress role. Set to empty string if none found.
 	$user_role   = bbp_get_user_blog_role( $user_id );
 
+	// If no WordPress role, add default WordPress role.
+	if ( false === $user_role ) {
+		$user_role = get_option( 'default_role' );
+		$bbp->current_user->add_role( $user_role );
+	}
+
 	// Get the role map
 	$role_map    = bbp_get_user_role_map();