The original:

The latest:

The differences:

1. Fixed “dead” pixel in the bottom right corner of the ribbon band title (to the right of “Clipboard” / “Quick Styles”).
2. Using dark color for the separator painted along the bottom edge of the title pane.
3. Consistent Y coordinate of the gloss line between the title pane and the taskbar panel (to the right of the round application menu button).
4. Fixed “ghost area” in the top-left wedge of the taskbar panel .