On save/preview we just see an empty preview

[Tom Maaswinkel]

When you save/preview a page that hasn't been edited or just had some minor edits (like an extra . or so), it just shows 'This is only a preview; changes have not yet been saved!' and all content is removed. It only happens with IE 6.0, and not with FF...

[Tom Maaswinkel]

Just got the latest Nightly Build, and that version also got the same bug!

[Tom Maaswinkel]

Before I forget, this is meant for the "MediaWiki+FCKeditor" bug list ;-)

[Frederico Caldeira Knabben]

I just went to the ​demo sand box and it worked for me with IE6.

Do you have more information for it? Does it work for you with the above URL?

[Henry2.0]

I encountered the exact same problem. I had the impression there is a mix between the POST data information present in the FORM and the action="index.php?title=test&action=submit". So I decided to filter is &action=submit out of the URL to place it as hidden value, which seems to work ... for us at least!;-)

So, find the following code block into EditPage.php (into includes directory):
(Tip: The error is around the <form id= , so search for this.)

		$safemodehtml = $this->checkUnicodeCompliantBrowser()
			? '' : Xml::hidden( 'safemode', '1' );

		$wgOut->addHTML( <<<END
{$toolbar}
<form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
END
);

		if( is_callable( $formCallback ) ) {
			call_user_func_array( $formCallback, array( &$wgOut ) );
		}

		wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );

		// Put these up at the top to ensure they aren't lost on early form submission
		$wgOut->addHTML( "
<input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />

And replace it by:

		$safemodehtml = $this->checkUnicodeCompliantBrowser()
			? '' : Xml::hidden( 'safemode', '1' );

// HeBo MOD Preview Bug
//$action = "/wiki/index.php?title=Secure_UC"; ... Removes &action=submit
$action_post= "";
$action_before = $action;
$action = str_replace("&action=submit","",$action);
if ($action_before!=$action) {
  $action_post = "<input type='hidden' name=\"action\" value=\"submit\" />";
}

		$wgOut->addHTML( <<<END
{$toolbar}
<form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
END
);

		if( is_callable( $formCallback ) ) {
			call_user_func_array( $formCallback, array( &$wgOut ) );
		}

		wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );

		// Put these up at the top to ensure they aren't lost on early form submission
		$wgOut->addHTML( "
" . $action_post ."
<input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />

I hope this will help, Henry2.0

[zorroDogs]

I have the exact same prob using mediawiki 1.12 w/ semantic forms extension. Work in FF but not IE7. Will try your solution. Thanks

[Artur Formella]

This is not a FCKeditor bug