Currently BB lets users scroll the notation windows (all 3 of standard, editable, roll) horizontally to display and edit various measures of the score (melody is what I'm using). Scrolling horizontally is a critically useful feature, of course.

However, the current scroll bar code not working properly, in three different ways.

First, clicking the scrollbar on either side of the "thumb" (the little square box that you drag back and forth in the scroll bar) should scroll the contents of the displayed notation page rightward (click to right of thumb) one page toward the end of the score, and leftward one page (click to left of thumb) toward the beginning of the score.

Instead, clicking left/right of the thumb jumps the display to the start/end of the score.

Second, clicking the scroll arrows (<, >) at the ends of the scroll bars should scroll the window contents incrementally left/right by some amount (I suggest 1 bar would be appropriate).

Instead, BB scrolls a whole page left/right, instead of an incremental amount.

Third, click-dragging the thumb should scroll the window contents left/right by an incremental amount depending on how far the thumb is dragged. (Again, I suggest increments of 1 measure are appropriate).

All three of these scroll bar behaviors are very, very standard software conventions for all scrollbars in all apps, ever since scrolling windows were invented some 45 years ago (at Xerox), and showed up in personal computers in the early 1980s.

A better approach would be to fix the scrollbar behavior to match user expectations and industry standards.

At the very least, copy/paste the scrollbar arrow (<,>) event code into the event handlers for clicking to the left/right of the thumb, so that at least the thumb click behavior matches industry standards. That's a simple coding fix that won't require much time to implement.

If this change is made, users will be able to display the notation for their melodies and solos much more intuitively.