XDrummer Song Editor not showing first bars when display is zoomed

  • I set the display on my iPad Pro to zoomed and when doing this, Xdrummer's song editor does not display the 1st few bars. When the display is set to standard instead of zoomed, the song editor looks fine. This is the setting under System Settings > "Display and Brightness" > "Display Zoom".

    Images below show this at different zoom levels in song editor (this zoom refers to pinching and spreading the song editor, not the general display zoom). The editor is scrolled as far to the left as possible. The 1st few bars do not ever display.

    iPad Pro 12.9" 2nd gen
    iOS 12.1.1
    XDrummer 1.5.8