The \Drupal\gcontent_moderation\Access\LatestRevisionCheck checks "view latest" permissions for all related group content for the node when there is no pending revision. The inner service \Drupal\content_moderation\Access\LatestRevisionCheck check if there is a pending revision. If there is not a pending revision then it returns AccessResult::forbidden(). The \Drupal\gcontent_moderation\Access\LatestRevisionCheck will continue to check all groups even though ultimately the access check will be forbidden. All of the AccessResult::orIf() checks will result in Forbidden since the inner service's result is Forbidden.
Add a check for !$access->isForbidden().
Needs review
1.0
Code