Ticket #6640: 6640.patch

_source/plugins/floatpanel/plugin.js

@@ -45 +45 @@
                         var doc = parentElement.getDocument(),
                                 panel = getPanel( editor, doc, parentElement, definition, level || 0 ),
                                 element = panel.element,
-                                iframe = element.getFirst().getFirst();
+                                iframe = element.getFirst().getFirst(),
+                                self = this;
 
                         this.element = element;
 
@@ -60 +61 @@
                                 children : [],
                                 dir : editor.lang.dir
                         };
+
+                        // Hide panel on mode switch (#6640)
+                        editor.on( 'mode', function()
+                                {
+                                        self.visible && self.hide();
+                                });
                 },
 
                 proto :