Obscure NPE you seem to get only when switching LAF at runtime.
Fixed AquaButtonUI clearing the border of segmented buttons if you switch LAF at runtime.
Button to test runtime LAF switching between Aqua and Haqua
Draggable toolbar background
Unified look in the demo app
Removing an unnecessary bitmask
Clarifying Aqua tabbed pane / panel bug - bug behaviour depends on the properties of the window.