In trigger's CREATED time microseconds are misinterpreted

use test;

drop table if exists t1;

create table t1 (i int);

SET TIMESTAMP=UNIX_TIMESTAMP('2016-01-01 10:10:10.33');

select now(2);

create or replace trigger tr1 after insert on t1 for each row set @a=@a+1;

SET TIMESTAMP=UNIX_TIMESTAMP('2016-01-01 10:10:10.99');

select now(2);

create or replace trigger tr2 after insert on t1 for each row set @a=@a+1;

select now(2);

select trigger_name, action_order, created from information_schema.triggers 

  where event_object_table = 't1' and trigger_schema='test';

drop table t1;

MariaDB [test]> select trigger_name, action_order, created from information_schema.triggers 

    ->   where event_object_table = 't1' and trigger_schema='test';

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

| trigger_name | action_order | created                |

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

| tr1          |            1 | 2016-01-01 10:10:13.30 |

| tr2          |            2 | 2016-01-01 10:10:19.90 |

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