a chain of 2d collision problem ( object going trough other )

Hello , i a have 5 object with 2D rigidbody

A and 4 other one above each other ,

i want the A object to push them like a stacks . ( im mooving object a with mouse position by setting the rigid body position to the mouse position )

the collision is verry well with A object and one single object , but when i put more than 1 object above each other 4 for example the a object start going trough those 4 object it loose the collision when i start moving the A object to push those 4 object with it ( they are one above each other ) .

all object are Continous collision and ( extrapolate interpolation)

i need help thanks in advance