One last thing you could try is to Append that object (or copy and paste it) from 2.8 to 2.79. See how it looks there. Fix it if you have do and then Append it back to your 2.8 project.
One last thing you could try is to Append that object (or copy and paste it) from 2.8 to 2.79. See how it looks there. Fix it if you have do and then Append it back to your 2.8 project.