AUI-1911 fix on YUI patched-v3.18.1 branch.
- Navigate to Sortable Layout demo (or Sortable List demo)
- Click a sortable element, but don't drag.
- Remove and destroy the node
- Try to drag another element.
Sortable Layout still functions and no JS errors.
JS error occurs and elements cannot be dragged.
Uncaught TypeError: Cannot read property 'className' of null