cp --no-preserve=mode ... should be different to cp ...! This is really a bug, because the option does not create the new copy with standard new file permission (not preserving the mode of the original file).
This --no-preserve=mode is a standard use case, for example, when copying files from an iso CD (all "executable") to a filesystem with more attributes.
Regarding comments in debbugs #488024
cp --no-preserve=mode ... should be different to cp ...! This is really a bug, because the option does not create the new copy with standard new file permission (not preserving the mode of the original file).
This --no-preserve=mode is a standard use case, for example, when copying files from an iso CD (all "executable") to a filesystem with more attributes.