diff --git a/src/ce_editor.pas b/src/ce_editor.pas
index fa6bcaa5..f00dbe15 100644
--- a/src/ce_editor.pas
+++ b/src/ce_editor.pas
@@ -131,12 +131,15 @@ procedure TCEEditorWidget.docClosing(aDoc: TCESynMemo);
 begin
   if fDoc <> aDoc then exit;
   fDoc := nil;
+  PageControl.Update;
+  UpdateByEvent;
 end;
 
 procedure TCEEditorWidget.docFocused(aDoc: TCESynMemo);
 begin
   fDoc := aDoc;
   focusedEditorChanged;
+  beginUpdateByDelay;
   UpdateByEvent;
 end;
 
@@ -184,6 +187,7 @@ end;
 
 procedure TCEEditorWidget.PageControlChange(Sender: TObject);
 begin
+  UpdateByEvent;
 end;
 
 procedure TCEEditorWidget.completionExecute(Sender: TObject);
diff --git a/src/ce_synmemo.pas b/src/ce_synmemo.pas
index 3f8128fb..c5337342 100644
--- a/src/ce_synmemo.pas
+++ b/src/ce_synmemo.pas
@@ -83,6 +83,10 @@ type
     procedure saveCache;
     procedure loadCache;
   protected
+    // TODO-cbugfix: open tree files, close the one at the center, select the left one, select the right one: the status bar displays the onfo from the left editor (sel count, pos, filename)
+    // however this is only a visual bug: saving works on the right editor...
+    procedure VisibleChanged; override;
+    procedure SetVisible(Value: Boolean); override;
     procedure SetHighlighter(const Value: TSynCustomHighlighter); override;
     procedure KeyDown(var Key: Word; Shift: TShiftState); override;
     procedure KeyUp(var Key: Word; Shift: TShiftState); override;
@@ -361,6 +365,24 @@ begin
   subjDocFocused(TCEMultiDocSubject(fMultiDocSubject), self);
 end;
 
+procedure TCESynMemo.SetVisible(Value: Boolean);
+begin
+  inherited;
+  if not Value then exit;
+  checkFileDate;
+  identifierToD2Syn;
+  subjDocFocused(TCEMultiDocSubject(fMultiDocSubject), self);
+end;
+
+procedure TCESynMemo.VisibleChanged;
+begin
+  inherited;
+  if not Visible then exit;
+  checkFileDate;
+  identifierToD2Syn;
+  subjDocFocused(TCEMultiDocSubject(fMultiDocSubject), self);
+end;
+
 procedure TCESynMemo.UpdateShowing;
 begin
   inherited;