Join query errors when using upper case table names

It is reported by a customer, that cross engine join query having an upper cased INNODB table, throwing ERROR.

Here are the repro steps:

MariaDB [inno]> CREATE TABLE INNO (a int, b varchar(10));
Query OK, 0 rows affected (0.004 sec)

MariaDB [inno]> create table cs (a int, b varchar(10)) engine=columnstore;
Query OK, 0 rows affected (1.120 sec)

MariaDB [inno]> select * from cs a, INNO b where a.a=b.a;
ERROR 1815 (HY000): Internal error: fatal error runing mysql_real_query() in libmysql_client lib (1146) (Table 'inno.inno' doesn't exist)

MariaDB [inno]> select @@lower_case_table_names;
--------------------------

--------------------------

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1 row in set (0.000 sec)

MariaDB [inno]> select @@version;
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----------------

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1 row in set (0.001 sec)