Missing index cardinality on ENABLE KEYS

DROP TABLE IF EXISTS `bad_table`;

CREATE TABLE `bad_table` (

    `id1` INT(10) UNSIGNED NOT NULL,

    `id2` INT(10) UNSIGNED NOT NULL,

    INDEX `idx1` (`id1`, `id2`)

)

ENGINE=MyISAM;

/*!40000 ALTER TABLE `jobListDevices` DISABLE KEYS */;

INSERT INTO `bad_table` VALUES

(1,1),

(1,2),

(1,3),

(1,4),

(2,1),

(2,2),

(2,3),

(2,4),

(3,1),

(3,2),

(3,3),

(3,4)

;

/*!40000 ALTER TABLE `jobListDevices` ENABLE KEYS */;

show index from `bad_table`;

analyze table `bad_table`;

show index from `bad_table`;