While in the title screen, I saw one of the simulations Spidertron get the acid effect but the acid effect sprite is on the ground and not centered on the Spidertron main body.
The acid sprite is a square BELOW the main body so this looks odd to me. I feel that it would make sense if the sprite was located on the main body instead.
Sorry for the bad pictures, the scenes go by too fast for me to get a good crop.