Page display in 3.0
Since you can't scroll down to see the 33rd staff in this score with the page size set to A3 with the default scaling I changed the page height to custom and 700 mm. One strange thing is that the width changes when I type a number into the heighth. I didn't change the width at all, but it's still 700 now. It seems to be a bug, but not the problem at hand. The attached score is currently in continuous view. When you switch it to page view it really gets messed up. Even changing the page size to A3 results in basically the same mess.
OS: Windows 10 (10.0), Arch.: x86_64, MuseScore version (64-bit): 3.0.0, revision: 26ad655
Comments
I have discovered the reason the page view was not working. When I changed the page Height in Page Settings it also changed the width, the right margin of odd pages and left margin or even pages leaving enough space on a page for less than a measure. I guess this needs a bug report.