maybe bug, $("form input") can not find.

[catoc]

<script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
<table>
<form>
	<tr>
		<td>
 <input >
		</td>
	</tr>
</form>
</table>

move <table> into <form>, can be find.
sorry for my english poor.

[davidserduke]

I'm not totally sure what you are saying but this appears to be invalid HTML. Many browsers will attempt to "figure out" what you are trying to do when the HTML is invalid and make "appropriate changes" which can result in unexpected results. I suspect from my limited testing this is the case. If you have a test case with valid HTML that causes this problem please reopen this ticket with a new test case.