Index: /CKEditor/trunk/CHANGES.html
===================================================================
--- /CKEditor/trunk/CHANGES.html	(revision 5251)
+++ /CKEditor/trunk/CHANGES.html	(revision 5252)
@@ -75,4 +75,5 @@
 		<li><a href="http://dev.fckeditor.net/ticket/5343">#5343</a> : Active list item ARIA role is wrongly placed.</li>
 		<li><a href="http://dev.fckeditor.net/ticket/3599">#3599</a> : Background color style apply to text with font size been narrowly rendered.</li>
+		<li><a href="http://dev.fckeditor.net/ticket/4711">#4711</a> : Line break inside preformatted text make it unable to type text at the end of previous line.</li>
 	</ul>
 	<h3>
Index: /CKEditor/trunk/_source/plugins/enterkey/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/enterkey/plugin.js	(revision 5251)
+++ /CKEditor/trunk/_source/plugins/enterkey/plugin.js	(revision 5252)
@@ -220,5 +220,6 @@
 				isPre = ( startBlockTag == 'pre' );
 
-				if ( isPre )
+				// Gecko prefers <br> as line-break inside <pre> (#4711).
+				if ( isPre && !CKEDITOR.env.gecko )
 					lineBreak = doc.createText( CKEDITOR.env.ie ? '\r' : '\n' );
 				else