* Fixed a regression from 1.8.24 where some graduated panels will draw incorrectly.
* Dragging groups while DraggingTool.isGridSnapEnabled no longer snaps their members separately. This fixes some bugs where dragging a Group might shift group contents during a drag, such as links, or where Group contents may shift the Group as the placeholder is recomputed.
* Fixed Node.findLinksTo when the other port id is not null.
* Some fixes for scrollbar customization.