Hey, I've been using your mod for some time now for my SE playthrough and it was fine, but I'm also noticing this behaviour now for some reason. I'm on vanilla plus some content mods on top (no overhauls).
Mods touching shotgun turret: Past's Defence Stuff > Hovercrafts
Mods touching shotgun ammo: Base
I'm suspecting this could be from a recent factorio update? Or maybe Hovercrafts but I don't see why