See also:

Key lock-in prevention function
This function prevents the doors from being locked with the key still in the ignition switch. ...

Overview
Subaru of America introduced a new 4-door version of the Subaru Impreza WRX STI performance flagship model. This will be the first time that the Subaru Impreza WRX STI has been offered in two body ...

Behavior with key lock-in prevention function non-operational
● If the lock lever is turned to the rear (“LOCK”) position with the driver’s door open and the driver’s door is then closed with the lock lever in that position, the driver’s door is locked ...