The script command did not include sequences of temporary tables.

h2/src/main/org/h2/table/Table.java

@@ -528,12 +528,10 @@ public abstract class Table extends SchemaObjectBase {
         while (sequences != null && sequences.size() > 0) {
             Sequence sequence = sequences.get(0);
             sequences.remove(0);
-            if (!isTemporary()) {
-                // only remove if no other table depends on this sequence
-                // this is possible when calling ALTER TABLE ALTER COLUMN
-                if (database.getDependentTable(sequence, this) == null) {
-                    database.removeSchemaObject(session, sequence);
-                }
+            // only remove if no other table depends on this sequence
+            // this is possible when calling ALTER TABLE ALTER COLUMN
+            if (database.getDependentTable(sequence, this) == null) {
+                database.removeSchemaObject(session, sequence);
             }
         }
     }