What do you mean, ALL the S2's have that?
I have 11 S2's and 1 S2 Booster. All from JR. (oh, and 18 RS1's and 7 RS4's too)
The ONLY one with the door problem was the S2 that came with the Diamond River Mining Route.
Solved it with another S2 loco.
Just copied the anim1.kin from this one to the DRM one.