Javascript JS DataTables ColReorder API重新排序错误？

使用API对列重新排序时，JS DataTables ColReorder会导致意外行为。

第一次重新订购效果很好。 fnOrder（[2,1,0]）

但随后的重新排序应该将列返回到其原始顺序，但事实并非如此。为什么不呢？ fnOrder（[0,1,2]）

这里有一个简单的小提琴示例：

html:

1
2
三
1
2
三
1
2
三

行为是设计的，而不是bug

//To switch position of two columns, always reorder based on array of consecutive integers (array length = number of columns).
//Even if columns already moved. Start with array of consecutive integers.
newColOrder = [0,1,2];

// Set new order of columns.
newColOrder[colTo] = colFrom; // colFrom = index to move column from.
newColOrder[colFrom] = colTo; // colTo = index to move column to.
e.g. to switch first and last column.
newColOrder[0] = 2;
newColOrder[2] = 0;
// [2,1,0];

// Reorder columns. Switch position of first and last column.
tableColReorder.fnOrder(newColOrder);

// Switch position of first and last column again.  Returns columns to original position.
tableColReorder.fnOrder(newColOrder);

<table border="1">
  <thead>
    <tr>
      <td>1</td>
      <td>2</td>
      <td>3</td>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>1</td>
      <td>2</td>
      <td>3</td>
    </tr>
    <tr>
      <td>1</td>
      <td>2</td>
      <td>3</td>
    </tr>
  </tbody>
</table>

//To switch position of two columns, always reorder based on array of consecutive integers (array length = number of columns).
//Even if columns already moved. Start with array of consecutive integers.
newColOrder = [0,1,2];

// Set new order of columns.
newColOrder[colTo] = colFrom; // colFrom = index to move column from.
newColOrder[colFrom] = colTo; // colTo = index to move column to.
e.g. to switch first and last column.
newColOrder[0] = 2;
newColOrder[2] = 0;
// [2,1,0];

// Reorder columns. Switch position of first and last column.
tableColReorder.fnOrder(newColOrder);

// Switch position of first and last column again.  Returns columns to original position.
tableColReorder.fnOrder(newColOrder);