Clefs duplicated after horizontal frame in imported 2.x file
S3 - Major
Win 7/10. MS 3.2.3.
Open the attached 2.x file (take the reset or not). The duplicate clefs are clearly visible after the horizontal frame.
See also #291406: Tab clefs are duplicated. And the same file also had an issue in 2.3.2: see #264542: UNDO doesn't work after hiding clef, when "Show invisible" is OFF.