Steps to reproduce the issue

This is similar issue as the one solved in #9380 and to the issue described in #9455.

Find languages

1. Use latest staging or RC4 with a MySql server 5.6.6+
2. Set the database driver as "PDO (MySQL)" in global configuration.
3. Go to "Extensions" -> "Install languages".
4. Click "Find Languages".

Install language
1. Use latest staging or RC4 with a MySql server 5.6.6+
2. Set the database driver as "PDO (MySQL)" in global configuration.
3. Go to "Extensions" -> "Install languages".
4. Select a language and install it.

Note

If you don't have MySql 5.6.6+ you can emulate the error by setting the sql_mode in pdomydriver file. For that, add, after this line https://github.com/joomla/joomla-cms/blob/staging/libraries/joomla/database/driver/pdomysql.php#L155 the following code:

$this->connection->query("SET @@SESSION.sql_mode = 'STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION';");

Expected result

Languages found / Language installed.

Actual result

Doesn't work:

System information (as much as possible)

Latest staging / RC 4.