fix Bug 33531

cell/model/clipboard.js

@@ -279,7 +279,8 @@
 				var sBase64;
 				
 				var selectedContent = new CSelectedContent();
-				isIntoShape.Get_SelectedContent(selectedContent);
+                AscFormat.ExecuteNoHistory(function(){isIntoShape.Get_SelectedContent(selectedContent);}, this, []);
+
 				
 				var oPresentationWriter = new AscCommon.CBinaryFileWriter();
 				

common/Drawings/Format/Shape.js

@@ -312,7 +312,7 @@ function ConvertParagraphToPPTX(paragraph, drawingDocument, newParent, bIsAddMat
         }
         else if(true === bIsAddMath && Item.Type === para_Math)
         {
-            new_paragraph.Internal_Content_Add(new_paragraph.Content.length, Item, false);
+            new_paragraph.Internal_Content_Add(new_paragraph.Content.length, Item.Copy(), false);
         }
     }
     var EndRun = new ParaRun(new_paragraph);