Ticket #7904: 7904_2.patch

_source/plugins/floatpanel/plugin.js

@@ -339 +339 @@
                                         var focusReturn = this._.returnFocus;
                                         if ( focusReturn )
                                         {
+                                                // In IE we need to make sure focus is not yet moved away. (#7904).
+                                                if ( CKEDITOR.env.ie && CKEDITOR.document.$.activeElement !== this._.iframe.$ )
+                                                        return;
+
                                                 // Webkit requires focus moved out panel iframe first.
                                                 if ( CKEDITOR.env.webkit && focusReturn.type )
                                                         focusReturn.getWindow().$.focus();