Calcite engine. Merge join incorrectly works when there are more then two matched rows on the right side

executeSql("CREATE TABLE t1(i INT)");
executeSql("CREATE INDEX t1_i ON t1(i)");
executeSql("INSERT INTO t1 VALUES (0)");
executeSql("CREATE TABLE t2(i INT)");
executeSql("CREATE INDEX t2_i ON t2(i)");
executeSql("INSERT INTO t2 VALUES (0), (0), (0)");
assertQuery("SELECT /*+ DISABLE_RULE('CorrelatedNestedLoopJoin', 'NestedLoopJoinConverter') */ t1.i FROM t1 LEFT JOIN t2 ON t1.i = t2.i").returns(0).returns(0).returns(0).check();