Howdy David,
I just tried this file, and no matter what staff I put in top position, that staff would not hide. So it's not just a soprano thing
Since this seems to be a problem with all your recent files, and since you've apparently not had this problem before, I'd be very interested in knowing what the process is that you're using for creating these files. Has anything changed since the last time you created new files? Eg. new device(s), new method that you're using, new....?
ttfn,
Sherry