The first .nfo in the picture is the scene .nfo and is untouched.
MC created a .tbn with this file name such that XBMC does not recognise it and no thumb shows. I assume because the .tbn matches the scene .nfo and not the XML .nfo
If I put -cd1 into the .tbn file everything is ok as it matches with the XML .nfo.
I am using 2.135 and this happened to all the movies I added since upgrading to this version.