Hello ,
It's been 52 days since this issue went into Incomplete and we haven't heard
from you on this.

At this point, our policy is to Close this issue, to keep things from getting
too cluttered. If you have more information about this issue and wish to
reopen it, please reply with a comment containing "jira-bot=reopen".

Hello ,
It's jira-bot again. Your bug report is important to us, but we haven't heard
from you since the previous notification. If we don't hear from you on
this in 7 days, the issue will be automatically closed.

Hello ,
I'm jira-bot, Percona's automated helper script. Your bug report is important
to us but we've been unable to reproduce it, and asked you for more
information. If we haven't heard from you on this in 3 more weeks, the issue
will be automatically closed.

Hi

Thank you for the report.

I'm not able to reproduce the described issue with MariaDB 10.4.13 and PT 3.2.

Let me know if you have a reproducible test case.

My Test:

Exporting with phpMyAdmin:

CREATE TABLE `my_table` (
{{ `mid` bigint(18) UNSIGNED NOT NULL,}}
{{ `msgid` bigint(18) UNSIGNED NOT NULL,}}
{{ `message` text COLLATE utf8mb4_unicode_ci NOT NULL,}}
{{ `from` bigint(18) UNSIGNED NOT NULL,}}
{{ `time` int(10) UNSIGNED NOT NULL,}}
{{ `edited` int(10) UNSIGNED DEFAULT NULL,}}
{{ `col1` enum('0','1') CHARACTER SET utf8 NOT NULL DEFAULT '0',}}
{{ `col2` int(10) UNSIGNED DEFAULT 0}}
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci KEY_BLOCK_SIZE=8 ROW_FORMAT=COMPRESSED;

ALTER TABLE `my_table`
{{ ADD PRIMARY KEY (`msgid`),}}
{{ ADD KEY `from` (`from`),}}
{{ ADD KEY `col2` (`col2`),}}
{{ ADD KEY `mid` (`mid`) USING BTREE,}}
{{ ADD KEY `time` (`time`);}}

ALTER TABLE `my_table`
{{ MODIFY `msgid` bigint(18) UNSIGNED NOT NULL AUTO_INCREMENT;}}

ALTER TABLE `my_table`
{{ ADD CONSTRAINT `_my_table_ibfk_1` FOREIGN KEY (`mid`) REFERENCES `my_parent_table` (`mid`) ON DELETE CASCADE ON UPDATE NO ACTION,}}
{{ ADD CONSTRAINT `_my_table_ibfk_2` FOREIGN KEY (`from`) REFERENCES `my_users` (`uid`) ON DELETE CASCADE ON UPDATE NO ACTION;}}