Index: _source/plugins/clipboard/plugin.js
===================================================================
--- _source/plugins/clipboard/plugin.js	(revision 5812)
+++ _source/plugins/clipboard/plugin.js	(revision )
@@ -163,8 +163,8 @@
 	{
 		var doc = this.document;
 
-		// Avoid recursions on 'paste' event for IE.
-		if ( CKEDITOR.env.ie && doc.getById( 'cke_pastebin' ) )
+		// Avoid recursions on 'paste' event or consequent paste too fast. (#5730)
+		if ( doc.getById( 'cke_pastebin' ) )
 			return;
 
 		// If the browser supports it, get the data directly