Ticket #8321: 8321.patch

_source/core/dom/element.js

@@ -798 +798 @@
                                 }
                         }
 
+                        // empty inline element is considered as visible. (#8321)
+                        if ( !isVisible )
+                        {
+                                var dtd = CKEDITOR.dtd[ this.getName() ];
+                                if ( dtd && dtd[ '#' ] )
+                                {
+                                        var filler = this.getDocument().createText( '\uffef' );
+                                        filler.appendTo( this );
+                                        isVisible = this.$.offsetHeight || this.$.offsetWidth;
+                                        filler.remove();
+                                }
+                        }
+
                         return !!isVisible;
                 },