diff --git a/src/integrationtest/org/apache/poi/stress/TestAllFiles.java b/src/integrationtest/org/apache/poi/stress/TestAllFiles.java
index cf059642a7..aa219bc2df 100644
--- a/src/integrationtest/org/apache/poi/stress/TestAllFiles.java
+++ b/src/integrationtest/org/apache/poi/stress/TestAllFiles.java
@@ -251,6 +251,7 @@ public class TestAllFiles {
     private static final Set<String> EXPECTED_FAILURES = unmodifiableHashSet(
         // password protected files without known password
         "spreadsheet/51832.xls",
+        "spreadsheet/64759.xlsx",
         "document/PasswordProtected.doc",
 
         // TODO: fails XMLExportTest, is this ok?
diff --git a/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestUnfixedBugs.java b/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestUnfixedBugs.java
index 925a878a53..64d4c15f5f 100644
--- a/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestUnfixedBugs.java
+++ b/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestUnfixedBugs.java
@@ -21,6 +21,7 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
@@ -217,6 +218,8 @@ public final class TestUnfixedBugs {
             // write to file for manual inspection
             XSSFTestDataSamples.writeOut(wb, "bug 55752 for review");
         }
+
+        fail("Test runs ok, but the resulting file is incorrectly formatted");
     }
 
     @Test
@@ -248,6 +251,8 @@ public final class TestUnfixedBugs {
         checkRows57423(wbBack.getSheetAt(0));
 
         wbBack.close();
+
+        fail("Excel reports that the workbook is corrupt");
     }
 
     private void checkRows57423(Sheet testSheet) throws IOException {
@@ -326,6 +331,8 @@ public final class TestUnfixedBugs {
             // LibreOffice doesn't complain when rows are not in ascending order
 
             wbBack.close();
+
+            fail("Excel reports that the workbook is corrupt, LibreOffice can read it");
         }
     }
 
@@ -387,4 +394,12 @@ public final class TestUnfixedBugs {
         }
 
     }
+
+    @Test
+    public void testBug64759() throws IOException {
+        try (Workbook wb = XSSFTestDataSamples.openSampleWorkbook("64759.xlsx")) {
+            Sheet cloned = wb.cloneSheet(0);
+            assertNotNull(cloned);
+        }
+    }
 }
diff --git a/test-data/spreadsheet/64759.xlsx b/test-data/spreadsheet/64759.xlsx
new file mode 100644
index 0000000000..e7b47c94f0
Binary files /dev/null and b/test-data/spreadsheet/64759.xlsx differ