auto_increment does not increment with compound primary key on partitioned table

CREATE DATABASE `creatable`;

CREATE TABLE `test1` (

  `id` bigint(20) NOT NULL AUTO_INCREMENT,

  `c1` int(11) NOT NULL DEFAULT 0,

  `c2` int(11) NOT NULL,

  `c3` int(11) NOT NULL,

  `c4` int(11) NULL,

  PRIMARY KEY (`id`,`c1`),

  UNIQUE KEY `unique_key` (`c1`,`c2`,`c3`)

) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci

 PARTITION BY RANGE (`c1`)

(PARTITION `partition_1` VALUES LESS THAN (2) ENGINE = InnoDB,

 PARTITION `partition_2` VALUES LESS THAN (3) ENGINE = InnoDB

 );

for i in {0..1000}; do mysql creatable -e "INSERT INTO test1(c1,c2,c3) VALUES (1,1,$i),(2,2,$i)"; done

for x in 1 2; do for i in {0..1000}; do mysql creatable -e "INSERT INTO test1(c1,c2,c3) VALUES ($x,$x,$i), ($x,12,$i), ($x,13,$i), ($x,14,$i), ($x,15,$i) on duplicate key update c4 = 1"; done & done

MariaDB [creatable]> select count(*) FROM (select id,count(*) from test1 group by id having count(*) > 1) x;

+----------+

| count(*) |

+----------+

|       61 |

+----------+