hide empty staves multi-part score with multiple instruments per part has instrument name shifted left

I'm trying 0f698fd using a multipart score where there one part (sax part in this example) has multiple parts (the 4 saxes). In the attached score, first problem I see is that the sax part doest have all the measures...only the first 11 measures are rendered, even though there are 32 measures in the score (note that meas 12-32 don't have any notes). But that sax part should display at least one empty stave, just like the other single-instrument parts display a blank staff line instead of hiding multi-staff rests) for meas 12-32:

If I enable system dividers for this mult-instrument sax part, the system dividers are displayed around the non-existant 2nd system:



Now if I create a note in any sax after meas 11, then the 2nd system is displayed in the sax part:



However, note that that "Atlo Sax." is way to the left outside of margin (again, I don't know if this is specifically related to this commit...haven't tried earlier ones yet)

EDIT: I think everything is as expected, actually, since this seems to be the same behavior if I create a multipart score and hide empty staves.

But one thing to note: it seems the the alignment of the sax instrument name was automatically corrected after I performed some edits, which I think triggered a re-layout, so I'm wondering if a full relayout needs to be triggered...

I renamed the title of this post.