Firefox doesn't show embedded content when switch to WYSIWYG mode

[guest]

Insert embed content into article under the text-mode of Xinha: " <embed src="http://www.tudou.com/v/UHdc70ECfPI" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" wmode="opaque" width="420" height="363">

</embed>"

In IE, if you switch mode to WYSIWYG mode, you will see the embed content,like a flash.

But FF does not show the embed content when switching between modes. However, FF will show the video when Xinha is created or the article is submitted.

It would be nice, if Xinha can show the embed content when switching between modes in Firefox.

Hope it will be fixed soon.