[GAMEPLAY] Normal Cast Abilities Cancel Improperly

Prior to patch 5.7, when using normal cast and pressing the button corresponding to an ability - creating the blue indicator for the (skill shot/point - click) ability - one could hold left mouse button - and the ability would not go off unless left click was released, in addition, one could hold left mouse and then pres right mouse to completely cancel the ability and the blue ability indicators disappeared and the ability did not cast. Post patch 5.7, when one holds the left mouse button and then presses the right mouse button the ability goes off instead of canceling. I have reproduced this consistently and have restored my key bindings and options to default and the problem persists.