html-builder

Describe the bug
When using move to lower the position of an element, adding 1 to the index does not work, and 2 needs to be added.

To Reproduce
I implemented the following code to move the element position up and down under the ROOT, but the onDown function did not move the element down.

  const {
    actions: { move, delete: deleteNode },
    query,
  } = useEditor();