[Zubersoft]

If you are seeing a zoom percentage, that would indicate that you are not in the annotations editor. The two finger panning only works inside the editor. In the current version of the software, you cannot pan the sheet music outside of the annotation editor. That is one of the things I'm fixing in version 5 (it required significant changes to the way PDFs are displayed). This means that if your PDF is not centered, zooming may cut off parts of the music.

Mike