A note for people, it probably has to be a new save file. That's what I had to do for it to show up. After like two hours of trying to get it to work (and not realizing the game devs changed the way enabling mods looks).

@MoonClipper, thank you for pointing that out. This mod has been working fine for months since I installed on my Windows desktop and laptop, but I just tried moving to Nobara Linux on my laptop and found that this is the only mod not showing up. It makes sense that Linux is case sensitive, where Windows doesn't care. I found the Linux path to that folder (/home/[username]/.local/share/Steam/steamapps/workshop/content/108600/3387425362/mods/MRaT/Common) and renamed the "Common" folder to "common", and now the mod is showing up in PZ. Until the author fixes it, this is how anyone else afflicted can fix it themselves.

unsubscribing and resubscribing fixed it, oops.

mod enabled, not seeing the recipe in the crafting menu https://imgur.com/a/i0zZIRp am i missing something?

By default this mod doesn't show up in the mod list. You need to rename the "Common" folder to "common" it's case sensitive.

Many THX !