I understand that the ability to tag people in LinkedIn post copy is limited by the LinkedIn API. The workaround that works for me is to first publish via HubSpot and then go to LinkedIn, edit the post and add my tag.
However, there doesn't seem to be any workaround to tag people or companies in images attached to a LinkedIn post. I can't seem to add a tag to an image once the post is already published. Has anyone found a workaround?