When working with a case sensitive file-system, MariaDB (it also fails in MySQL) allows you to have
a database with the same name in different cases (example TEST/test).
This works correctly.
However, procedures that are related to that database are stored inside
information_schema.routines associated with ROUTINE_SCHEMA which is a
case insensitive column.
This brings a problem, for example, when using mysqldump since when
listing routines to dump in the line "SHOW %s STATUS WHERE Db = '%s'"
it would bring procedures from other databases that have the same name
with different case.
mysqldump could be modified to use mysql.proc instead which correctly
has utf8_bin in the Db column, but I'm not sure that would be the best
to go since this affects anyone using SHOW <P/F> STATUS.

CREATE DATABASE A;

USE A;

delimiter //

CREATE PROCEDURE simpleproc()

    BEGIN

       SELECT 1;

    END//

delimiter ;

CREATE DATABASE a;

USE a;

SHOW PROCEDURE STATUS WHERE Db = 'a';

-- Incorrectly shows procedure from A

SELECT count(*) FROM mysql.proc WHERE Db='a';

-- Correctly show 0 results

DROP DATABASE A;

DROP DATABASE a;