Blank, vertical bar spanning half the page when scrolling on continuous view (score)

1.) Create a score with multiple instruments, at least 3-4.
2.) Switch from "Page View" to "Continuous View" in the toolbar.
3.) Scroll for a few measures until the first measure disappears on the left side of the screen.

A white, vertical bar about 1.5 inches thick should appear on the screen, situated on the left next to the staff names; it is covering some of the measures, if not all of them. Does not inhibit use of the program, but it is annoying and distracting.