I have had a group of 4 NPCs despawn and now another group disappearing from my base. They seem to dissapear after quitting and entering the server again. I have tried my best to replicate this in another server with the same mods, but to no avail. I am playing the game on a solo server.

The mods I have installed are the following:

An exhiliratingly organized lit mod,
Autostar trailers,
Bandits,
Bandits day one,
Better sorting,
Boots and clothes expanded,
Easy config chucked,
Expanded helicopter events,
Filibuster Rhymes' used cars,
Firearms B41 revamped,
Fuel API,
Grass lands,
ItemtweakerAPI,
Itemtweaker extra clothing option addon,
Jay Noir's rifle slings,
Light switch plus,
Mod options,
More description for traits,
Read while walking,
Scent of blood,
SearchmodeAPI,
Spongie's clothing,
Spongie's open jackets,
Standing items,
True actions,
True actions dancing,
Tsar's common library,
Weather manager,
Working masks,
Jordan's tailoring buff,
Error magnifier,
Change sandbox options.