That is correct, picking animated entities does so against the initial frame/default pose.
There is a slow way of getting around this which I've used although rather inefficient. That is to take a snapshot of the entity with another camera with the camera placed at the position the linepick starts from and pointing in the direction of the linepick (align to vector command is useful here), make your entity a color such as rgb 255,0,255 and check the pixel colour at the centre of the image captured with the camera render.
There is a slow way of getting around this which I've used although rather inefficient. That is to take a snapshot of the entity with another camera with the camera placed at the position the linepick starts from and pointing in the direction of the linepick (align to vector command is useful here), make your entity a color such as rgb 255,0,255 and check the pixel colour at the centre of the image captured with the camera render.