Measure Numbers and Section Break
Measure numbers are inconsistent, when using section breaks. Here how to reproduce the problem:
Step 1: Open MeasureNumbersTest.mscz
Step 2: Notice how the first bar in line 3 is numbered with "1", which is correct as this is the first bar of a new section. The first bars of each line are numbered: 1, 9, 1, 9
Step 3: Add one note to bar 2 of the second section, the only one which is left empty.
Step 4: See how the numbering in line 3 is changed. The incorrect numbering now goes: 1, 9, 17, 9
You may now also want to add another note to the last line to also see the numbers in that line change. If you go to "Format -> Style" you can restore the correct numbering by applying a "measure numbers" style (e.g., uncheck and then check "Show first"). Only to destroy it again by going through steps 3 or 4.
Documented and confirmed by Shoichi here: https://musescore.org/en/node/281325