rownumber+group，查询结果错误

[motto1314]

为了更快的定位您的问题，请提供以下信息，谢谢
【详述】问题详细描述

CREATE TABLE test.`table_1` (
  `id` bigint(20) NULL,
  `date1` date NULL,
  `col1` varchar(65533) NULL,
  `time1` datetime NULL
) ENGINE=OLAP 
DUPLICATE KEY(`id`, `date1`, `col1`)
COMMENT "日期测试4"
DISTRIBUTED BY HASH(`id`) BUCKETS 1 
PROPERTIES (
"replication_num" = "1",
"in_memory" = "false",
"storage_format" = "DEFAULT",
"enable_persistent_index" = "false",
"compression" = "LZ4"
);

insert into test.table_1 values (1,'2024-05-16','c1',null);
insert into test.table_1 values (2,'2024-05-16','c2',null);
insert into test.table_1 values (3,'2024-05-16','c3',null);
insert into test.table_1 values (4,'2024-05-16','c4',null);
insert into test.table_1 values (5,'2024-05-16','c5',null);
insert into test.table_1 values (6,'2024-05-16','c6',null);
insert into test.table_1 values (7,'2024-05-17','b1',null);
insert into test.table_1 values (8,'2024-05-17','b2',null);
insert into test.table_1 values (9,'2024-05-17','b3',null);


select
  date1,
  count(col1) cn
from
(
  select
    date1,
    col1,
    time1,
    row_number() over(partition by col1) as rn
  from test.table_1) t1
where t1.rn=1
group by date1

期望结果是：
|date1|cn|
|2024-05-16|6|
|2024-05-16|3|

偶尔得到错误结果
|date1|cn|
|2024-05-16|2|
|2024-05-16|1|
|2024-05-16|2|
|2024-05-16|1|
|2024-05-17|1|
|2024-05-17|2|
【背景】做过哪些操作？
偶发错误，时而结果正确，时而结果错误
发现错误时，没有dict_decode。 正确是是有dict_decode的。
所以关闭了dict_decode，就必现了

curl -X POST 'http://xx.xx.xx.xx:8030/api/global_dict/table/enable?db_name=test&table_name=table_1&enable=true' \
  -H 'Authorization: .....' \
  -H 'Cookie: .....' 

【业务影响】查询结果错误
【是否存算分离】否
【StarRocks版本】2.5.4
【集群规模】1fe+1be
【机器信息】CPU虚拟核/内存/网卡，例如：48C/64G/万兆
【联系方式】541166058@qq.com
【附件】