Mordekaiser ghost

[GAMEPLAY] i dont know if its entended to work liek that or if it is a bug but mordekaiser ghost pet dont get turret agro while attack enemy team player. i was playign a game vs a mord and he just send his ghost at us whit a minion wave and the turret never attacked the ghost just the minion. and he was standing far away to not get aggro himself.
it was prettyb unbalanced if it is working as intended, if not can you fix the bug plz and make the turret actually attack the pet.