When dragging over tree nodes under the Windows L&F, the horizontal dotted lines connecting nodes to the trees are re-painted with pixels missing.

- Compile and run the attached test.
- Switch to the Windows L&F using the combo box in the bottom left.
- Expand the "colors" node.
- Drag from the "Drag from here 0" label at the top, into the tree
- While dragging over each of the nodes "blue", "violet", "red", "yellow",
  notice that the dotted line to the left of the node is repainted with pixels missing.