Forums Bug Reports shortfn and NTFS system file

I move dir in other dir, but when i do: $findfile(dir,*,0,echo $1-).shortfn
I see long filename (i put $1-, because $1 don't ruturn all the filename)

I remark some file have short filename, maybe because they are created on FAT32 volume and moved after, all new file haven't shortfn. Files recently (before change registry) but created on fat32 renamed haven't shortfn...