wkhtmltopdf 0.12.6版本处理表格时分页失效问题求助

从Stack Overflow的多版本相关问答来看，wkhtmltopdf在处理表格分页时存在兼容问题。我当前使用的是撰写时的最新版本0.12.6。

我的HTML代码如下：

<HTML>
  <head>
    <title>A nice page</title>
    <link rel="stylesheet" href="screen.css" media="screen" />
    <link rel="stylesheet" href="printer.css" media="print" />
  </head>
  <body>
    <table class="printer_friendly">
      <tbody class="printer_friendly_tbody">
        <tr>
          <td class="tbody_first" colspan="6">This is the beginning of a new picture. This must be the first in the groupof tbody 0</td>
        </tr>
        <tr>
          <th colspan="3.0" rowspan="5">
            <img src="images/pdf_download.png" width="300px" />
          </th>
          <td>Random text</td>
          <td>Random text</td>
          <td>Random text</td>
        </tr>
        <tr>
          <td>This is (0, 0) in tbody 0</td>
          <td>This is (0, 1) in tbody 0</td>
          <td>This is (0, 2) in tbody 0</td>
        </tr>
        <tr>
          <td>This is (1, 0) in tbody 0</td>
          <td>This is (1, 1) in tbody 0</td>
          <td>This is (1, 2) in tbody 0</td>
        </tr>
        <tr>
          <td>This is (2, 0) in tbody 0</td>
          <td>This is (2, 1) in tbody 0</td>
          <td>This is (2, 2) in tbody 0</td>
        </tr>
        <tr>
          <td>This is (3, 0) in tbody 0</td>
          <td>This is (3, 1) in tbody 0</td>
          <td>This is (3, 2) in tbody 0</td>
        </tr>
        <tr>
          <td colspan="6">This is (0, 2) in tbody 0</td>
        </tr>
        <tr>
          <td colspan="6">This is (1, 2) in tbody 0</td>
        </tr>
      </tbody>
      <tbody class="printer_friendly_tbody">
        <tr>
          <td class="tbody_first" colspan="6">This is the beginning of a new picture. This must be the first in the groupof tbody 1</td>
        </tr>
        <tr>
          <th colspan="3.0" rowspan="5">
            <img src="images/pdf_download.png" width="300px" />
          </th>
          <td>Random text</td>
          <td>Random text</td>
          <td>Random text</td>
        </tr>
        <tr>
          <td>This is (0, 0) in tbody 1</td>
          <td>This is (0, 1) in tbody 1</td>
          <td>This is (0, 2) in tbody 1</td>
        </tr>
        <tr>
          <td>This is (1, 0) in tbody 1</td>
          <td>This is (1, 1) in tbody 1</td>
          <td>This is (1, 2) in tbody 1</td>
        </tr>
        <tr>
          <td>This is (2, 0) in tbody 1</td>
          <td>This is (2, 1) in tbody 1</td>
          <td>This is (2, 2) in tbody 1</td>
        </tr>
        <tr>
          <td>This is (3, 0) in tbody 1</td>
          <td>This is (3, 1) in tbody 1</td>
          <td>This is (3, 2) in tbody 1</td>
        </tr>
        <tr>
          <td colspan="6">This is (0, 2) in tbody 1</td>
        </tr>
        <tr>
          <td colspan="6">This is (1, 2) in tbody 1</td>
        </tr>
      </tbody>
    </table>
  </body>
 </html>

根据Stack Overflow的建议，我把需要保持在一起的行分组到tbody中，并为打印媒体设置了如下CSS：

.printer_friendly_tbody {
    background-color:aliceblue;
    page-break-inside:avoid;
    page-break-before:auto;
    page-break-after:auto;
}

我的需求是让每个tbody内的所有行保持在一起，必要时在.printer_friendly_tbody之前或之后拆分表格。用Chrome的打印/生成PDF功能可以得到完美的结果，但用wkhtmltopdf生成时完全失效。我已经尝试过启用和禁用打印媒体选项，但都没用。因为必须用到wkhtmltopdf的其他功能，所以希望能找到解决这个问题的方法，求建议？

内容的提问来源于stack exchange，提问作者toto