Multi-Measure Rests and Measure Repeats display below the staff on single-line staffs
image on 3.0 dev 7f9585a:
image on 2.0.3 release:
Notice that in both versions the repeat measure symbol is displayed below the staff. The multi-measure rest somehow got offset incorrectly in 3.0.0.
Note that the definition of Staff::height() changed on Jun 19, 2014 with 7e4c70a such that a single line staff changed from 0 to having the same height as a two-line staff. It doesn't look like the 3.0 code for mm-rest and measure repeat is aware of this definition. Anyway, as I was implementing #10220: Add a two and four measure repeat sign I had already fixed this issue for single measure repeat, but I guess I will add the the PR the code for MMRests as well.