Ok seems I had some other thing going on which is why FO76 never worked,.
However it was possible to cause duplicate runners in the drop down selection list.
Another issue I have is Alt-Tab will disable the tab key in fo76, rather odd. I have a logitech k800 keyboard and have tried to disable key repeat function, doesn’t fix it. Seems the tab key is getting stuck for just the wine session but otherwise works fine elsewhere.