Autofill inserts items (ammo,fuel,etc) inside entities when placing them in the world.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Sadly, it appears that the mod author has abandoned this mod. It constantly causes errors in my 16.51 maps, and there's no sign of any response or activity from the mod author.
Broken yes, abandoned not really, just a lack of time
Use Even Distribution mod instead of this auto fill bugs. EvDn works fine, does more things and has GUI
Even Distribution
auto fill bugs