So in vanilla pz, zombies stand idle often forming groups with one or two that will sometimes wander about and return to their pack when they haven't detected the player.

Restless zombies makes the zombies not care for these groups, and randomly roam around at all times, making them more likely to run into you or do something interesting instead of just sit still alongside the 'cheating behaviour'.

This mod removes/breaks everything, including the code that just makes zombies walk around - so they act the same as vanilla zombies being mostly idle.

thats unfortunate D:
idk what idle issue you mean though, i havent played with this mod (although i thought it looked cool and wanted to see what people meant by cheating code, so i decided i'd try and fix it (remove the zombies that spawn in your house or whatever according to the comments)) so i havent experienced that. its sad that it didn't work at all though :(
but yea the purpose of this wasnt to fix any idle issue, it was to remove the zombies spawning in peoples houses. or whatever. i dont evne know anymore, i forgor
aAAAAAAAAA

I also tested this in singleplayer, zombies are idle like vanilla. Nothing seems to have changed. Thanks for trying though.

I tested this quickly in a singleplayer game and it appears to do nothing, most zombies will remain idle