OnShowSlide(this.num, this.isVisible());

slide/Editor/Format/Presentation.js

@@ -2608,7 +2608,7 @@ CPresentation.prototype =
                 oSlide = this.Slides[nIndex];
                 if(oSlide){
                     oSlide.setShow(bShow);
-                    this.DrawingDocument.OnRecalculatePage(nIndex, oSlide);//need only for update index label in thumbnails; TODO: remove it
+                    //this.DrawingDocument.OnShowSlide(nIndex, oSlide.isVisible());
                 }
             }
             this.DrawingDocument.OnEndRecalculate(false, false);

slide/Editor/Format/Slide.js

@@ -551,6 +551,12 @@ Slide.prototype =
                     }
                     break;
                 }
+                case AscDFH.historyitem_SlideSetShow:
+                {
+                    var oDrawingDocument = this.getDrawingDocument();
+                    //oDrawingDocument.OnShowSlide(this.num, this.isVisible());
+                    break;
+                }
             }
             this.addToRecalculate();
         }