Ticket #3068: 3068_3.patch

_source/core/dom/domobject.js

@@ -85 +85 @@
                                 var listener = nativeListeners[ eventName ] = getNativeListener( this, eventName );
 
                                 if ( this.$.addEventListener )
-                                        this.$.addEventListener( eventName, listener, false );
+                                        this.$.addEventListener( eventName, listener, !!CKEDITOR.event.useCapture );
                                 else if ( this.$.attachEvent )
                                         this.$.attachEvent( 'on' + eventName, listener );
                         }

_source/plugins/floatpanel/plugin.js

@@ -130 +130 @@
                                         // Non IE prefer the event into a window object.
                                         var focused = CKEDITOR.env.ie ? iframe : new CKEDITOR.dom.window( iframe.$.contentWindow );
 
-                                        focused.on( 'blur', function()
+                                        // With addEventListener compatible browsers, we must
+                                        // useCapture when registering the focus/blur events to
+                                        // guarantee they will be firing in all situations. (#3068)
+                                        CKEDITOR.event.useCapture = true;
+
+                                        focused.on( 'blur', function( ev )
                                                 {
+                                                        // As we are using capture to register the listener,
+                                                        // the blur event may get fired even when focusing
+                                                        // inside the window itself, so we must ensure the
+                                                        // target is out of it.
+                                                        var target = ev.data.getTarget(),
+                                                                targetWindow = target.getWindow && target.getWindow();
+
+                                                        if ( targetWindow && targetWindow.equals( focused ) )
+                                                                return;
+
                                                         if ( !this._.activeChild )
                                                                 this.hide();
                                                 },
@@ -144 +159 @@
                                                 },
                                                 this );
 
+                                        CKEDITOR.event.useCapture = false;
+
                                         this._.blurSet = 1;
                                 }