Eventually this same Explorer has finally "Broken" to where it wouldn't reverse at all anymore, so I destroyed it and re-created a new one from it's parts and now it works and the icon shows up. Bear in mind.. I have had this explorer since last month IRL time and this current play through I have about 190 hours so far in it. I guess it was just some how not compatible with the current patch? I seemed to of fixed it on my own though.