<!DOCTYPE HTML>
<html><head>
    <meta charset="utf-8">
    <title>Testcase for bug 1031934</title>
</head>
<body>

<table border="1">
<tbody style="visibility: collapse;">
</tbody>
<tbody>
<tr><td>Hello</td></tr>
</tbody>
<tbody style="visibility: collapse;">
</tbody>
</table>

<table border="1">
<tbody></tbody>
<tbody>
<tr><td>Hello</td></tr>
</tbody>
<tbody></tbody>
</table>

</body>
</html>