Not sure what causes it yet but for some reason the map preview doesn't load when creating a new world. It does show when the world is generated

I managed to narrow down the incompatibility to Biolith.

@Aces-and-Jacks It would be nice if you could provide a link to the modpack next time :)

Oh sorry, I haven't made much issues about modpacks so I didn't think about adding a link. Thank you for solving what caused the issue, and maybe fixing it

Should be fixed with version 1.1.3: https://modrinth.com/mod/world-preview/version/8myO4JQ4

Feel free to reopen if your problem isn't fixed.