query gets 'runtime error: index out of range' and no error stack in the tidb log

[wjhuang2016]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

CREATE TABLE `tl67c6ff48` (
  `col_4_1` timestamp NULL DEFAULT NULL,
  `col_5` bit(37) NOT NULL,
  UNIQUE KEY `idx_1` (`col_5`,`col_4_1`),
  UNIQUE KEY `idx_2` (`col_4_1`,`col_5`),
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
INSERT INTO `tl67c6ff48` VALUES ('2006-10-20 00:00:00',x'13e677d4b1'), ('2033-05-05 00:00:00',x'05d3a46d88'), ('1977-06-24 00:00:00',x'04dba3570c'), ('2025-05-14 00:00:00',x'0ed284dfee'), ('2009-04-29 00:00:00',x'12657141bf'), ('2002-05-12 00:00:00',x'101f239415'), ('1983-04-25 00:00:00',x'1ce8daeaa5'), ('2001-05-14 00:00:00',x'1363f05cd5'), ('2000-07-19 00:00:00',x'0d81cc3a76'), ('1981-08-10 00:00:00',x'0dffb7b521'), ('1970-07-23 00:00:00',x'009094e78f'), ('2007-04-07 00:00:00',x'1bb8e87620'), ('1973-02-26 00:00:00',x'175ecaca68'), ('2022-04-19 00:00:00',x'1af1a92543'), ('2027-09-20 00:00:00',x'16ae61d000'), ('2016-04-26 00:00:00',x'14a5e285e5'), ('2025-04-14 00:00:00',x'0765e5ab35'), ('1980-01-05 00:00:00',x'164f0cb832'), ('1999-10-03 00:00:00',x'0647364cd6'), ('2018-12-13 00:00:00',x'14f7dbc182'), ('2025-05-06 00:00:00',x'165ce4e544'), ('2003-06-07 00:00:00',x'0a55af03c4'), ('2012-05-28 00:00:00',x'0f3e47d446'), ('1996-08-20 00:00:00',x'1dda39bfaa');

select reverse(col_5 ) as r1  from tl67c6ff48  order by r1;

2. What did you expect to see? (Required)

No error

3. What did you see instead (Required)

mysql> select reverse(col_5 ) as r1  from tl67c6ff48  order by r1;
ERROR 1105 (HY000): runtime error: index out of range [5] with length 5

Note: there is no error stack in the tidb log, so I think it's a new bug.

4. What is your TiDB version? (Required)

nightly-a7260ff598ce0e7c0a77367e84ec265f91b8073e