musescore/MuseScore — pull request #120 by mgavioli (2012-11-05 19:43:57+00:00)
Title: Fix 18640 link bar span to staff changes

Bar line span from/to is updated when the number of staff lines changes (either because the staff is assigned another staff type or because the staff type itself is edited).

Also fixes system left bar line and correct defaults when reading back a score from file.

Should fix #18640 and its two duplicates #18757 and #18639.