Index: src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSheet.java
===================================================================
--- src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSheet.java	(revision 1886124)
+++ src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSheet.java	(working copy)
@@ -603,6 +603,7 @@
             if(autoCreate) {
                 //drawingNumber = #drawings.size() + 1
                 int drawingNumber = getPackagePart().getPackage().getPartsByContentType(XSSFRelation.VML_DRAWINGS.getContentType()).size() + 1;
+                drawingNumber = getNextPartNumber(XSSFRelation.VML_DRAWINGS, drawingNumber);
                 RelationPart rp = createRelationship(XSSFRelation.VML_DRAWINGS, XSSFFactory.getInstance(), drawingNumber, false);
                 drawing = rp.getDocumentPart();
                 String relId = rp.getRelationship().getId();
Index: src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFSheet.java
===================================================================
--- src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFSheet.java	(revision 1886124)
+++ src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFSheet.java	(working copy)
@@ -1995,4 +1995,30 @@
             }
         }
     }
+    
+    @Test
+    public void bug65120() throws IOException {
+        XSSFWorkbook wb = new XSSFWorkbook();
+        CreationHelper creationHelper = wb.getCreationHelper();
+
+        Sheet sheet1 = wb.createSheet();
+        Cell cell1 = sheet1.createRow(0).createCell(0);
+        Comment comment1 = sheet1.createDrawingPatriarch().createCellComment(creationHelper.createClientAnchor());
+        cell1.setCellComment(comment1);
+
+        Sheet sheet2 = wb.createSheet();
+        Cell cell2 = sheet2.createRow(0).createCell(0);
+        Comment comment2 = sheet2.createDrawingPatriarch().createCellComment(creationHelper.createClientAnchor());
+        cell2.setCellComment(comment2);
+
+        wb.removeSheetAt(0);
+
+        Sheet sheet3 = wb.createSheet();
+        Cell cell3 = sheet3.createRow(0).createCell(0);
+        Comment comment3 = sheet3.createDrawingPatriarch().createCellComment(creationHelper.createClientAnchor());
+        cell3.setCellComment(comment3);
+
+        wb.close();
+    }
+    
 }