Updating item status through Mass Change

Summary:

As per current configuration, Item Status attribute is master controlled (screenshot 1). Hence it should be editable only at master organization and values in child organizations should default from value that is set at master. Considering above, 

1. In PIM, Item status field is greyed out in child organizations. We can’t edit same when viewing item in child organizations. This is understandable and expected behavior (screenshot 2)
2. However, using mass item changes, item status can be updated for desired child organizations without updating same in master organization (screenshots 3 and 4). My understanding is this should not happen. But this is being allowed by system. So isn’t this an Oracle bug ?