Err... I 'fixed' it???

build.gradle

@@ -122,7 +122,7 @@ subprojects { p ->
             modImplementation "net.fabricmc:fabric-loader:${rootProject.fabric_loader_version}"
         }
 
-        if (p != project(":core")) {
+        if (p == project(":common")) {
             common(project(":core")) { transitive false }
             shadowMe(project(":core")) { transitive false }
         }

gradle.properties

@@ -15,7 +15,7 @@ mod_issues=https://gitlab.com/jeseibel/minecraft-lod-mod/-/issues
 
 # Global Plugin versions
 toml_version=3.6.4
-manifold_version=2022.1.7
+manifold_version=2022.1.14
 enabled_platforms=fabric,forge
 mcVersions=1.16.5,1.17.1,1.18.1,1.18.2,1.19