Currently, the moment you plug in a controller, the skill attacks change from attacking towards your cursor to attacking in the direction your character is facing. This should be a feature that is toggle-able considering controllers have the ability to move the cursor, thus they should be allowed to aim towards the cursor.
Having the attacks always attack in the direction your character is facing with a controller can be a hinderance to skills that require aiming and controller users should be allowed to move the cursor for manual aiming as well.
This should be on a point/basic skill basis like gamepad aim assist options are as it is convenient to have basic skills aim towards direction character faces, and aim skills to be towards the cursor.
Note: This persists even if all aim assists in gamepad settings and in gameplay settings are disabled.
There have been multiple complaints regarding this on reddit as well and I will link them below (Unfortunately only two are allowed for a new user):
Reddit Complaint 1
Reddit Complaint 2