Dooh sussed it!
First of all I thought it was a Wall in fact it was a beam. Also someone or something dechecked the use this Complex Profiles for Beams. Once I rechecked/ticked the use this for Beams it is now displaying the correct name
AC versions 3.41 to 25 (UKI Full 5005).
Using AC25 5005 UKI FULL
Mac OSX 10.15.7 (19G2021) Mac Pro-2013 32gbRam AMD FirePro D500 3072 MB graphics