Affects Solaris:

- Compile and run the attached program on Solaris
- Switch the bottom right combo box from USE_SELECTION to INSERT
- Drag from the label "Drag from here 0"
- While dragging hover over the bottom half of the "food" node
  (You want the insert line to be below the node, but still have the pointer on the node)
- Don't move the mouse, and wait for the "food" node to expand
- Once it expands, the insert line should be between "food" and "hot dogs"
- On Solaris, it moves to the bottom of the tree. This is a bug.