Header overlap in pdf

I added the title to the second page of my scores, and in at least one of them the title overlapped with the musical/chord notation below it, as shown in the attached image. I found the Music Top Margin setting in the Style settings and increased it. That fixed the problem, and I exported the file to another folder. When I open the pdf file from my computer, either in Adobe Acrobat or in my browser (Firefox), the change holds and it is fine. However, when I uploaded the file to my website and open it in my browser, the title is once again overlapping the chord notation. Musescore seems to be working fine and even exports the document properly, but does anyone have any idea why the change doesn't hold when I put the file up on line or what I can do about it?