This mod moved! The portal can't rename mods, so the hitbox fix now lives in Pyanodon's Better Caravans (https://mods.factorio.com/mod/py-better-caravans) together with my Idle Caravans and Caravan Speed Multiplier mods. Every part can be turned on or off there.

This last version is empty and just pulls in the new mod. Once it's installed you can remove this one.