iframe fallback contents encoded

[UserAccount1]

I think I've found a bug when adding iframe fallback content.

If I enter the below into the source.

<iframe src="​http://google.co.uk" > TEST FALL BACK CONTENT <a href="#">this is a link</a> </iframe> ​ The fallback content is being encoded, and from what I can see from W3C this should not happen.

<iframe src="​http://google.co.uk">TEST FALL BACK CONTENT &amp;amp;amp;lt;a data-cke-saved-href=&amp;amp;quot;#&amp;amp;quot; href=&amp;amp;quot;#&amp;amp;quot;&amp;amp;amp;gt;this is a link&amp;amp;amp;lt;/a&amp;amp;amp;gt;</iframe>

[Piotrek Koszuliński]

DUP of #11442.

BTW. Check out this comment: ​http://dev.ckeditor.com/ticket/11442#comment:6

And (source: ​http://dev.w3.org/html5/spec-preview/the-iframe-element.html):

Descendants of iframe elements represent nothing. (In legacy user agents that do not support iframe elements, the contents would be parsed as markup that could act as fallback content.)

Basically it doesn't make sense any more to provide the fallback content and it's parsed by the browsers as a text, what causes the issue that you reported.