Structures Stopped Spawning...

[SpenkerC]

I created a world in 2020 with the base terrarium mod and a couple of structure mods and everything worked smoothly. In 2021 I even added more structure mods and they all worked perfectly. Sometime in 2022 I realized while exploring new chucks that structures completely stopped spawning. I made a new world and a new mod-pack with the same mods and still no structures. All of the structures mods work when I turn the terrarium mod off and use a normal world so I've narrowed it to the terrarium mod. I'm confused because the original world in question had structures enabled correctly spawned them for two years but then stopped? Any ideas on what could cause this?

(Yes I've uninstalled and reinstalled the terrarium mod. I also have structures on but still no structures)

(Edit) I forgot to mention it's 1.12.2 and on curseforge