I've installed M1 turrets and CIWSs to large docking port using grabber ship. and aligned it using DockRotation mod(https://forum.kerbalspaceprogram.com/index.php?/topic/170484-19-110-dockrotate-lightweight-robotics-rotational-control-on-docking-ports-plus-noderotate-make-any-part-rotate/)
but, as the screenshot i take. if I select a weapon and aim somewhere, The Crosshair placed wrong position and bullets/projectiles also fires from wrong position.
I don't know yet whether this way of installation causing the bug or not. but for reproduce the glitch, I wrote what exactly i've done.