Aloha,

Andrew says, "I can scroll by using the keyboard cursor keys, or by dragging the thumb, or by clicking anywhere in the scrollbar"..

Yes, those keyboard functions as mentioned above work, but I seldom use the computer keyboard keys. Most of the time I use the scroll wheel of the mouse to do note editing. The mouse scrolling feature is very convenient in entering and editing MIDI notes.. and now it's gone in both Catatlina 64bit and Mojave 64bit. It's working fine in 32bit in both Catalina and Mojave..

Music2go4
teamsalidona @ Salidona.com