Copying Slash Marks creates red "out of range" visual

1) Create Acoustic Bass part and fill with slashes.
2) Copy and paste those slashes into the part of another instrument (in a higher range, such as clarinet, flute, or alto saxophone). The slashes will appear red, because Musescore reads them as being out of the range of the instrument (as it does when one copies a notes into the part of an instrument with a different range from the original).