--- a/net/minecraft/util/registry/SimpleRegistry.java
+++ b/net/minecraft/util/registry/SimpleRegistry.java
@@ -212,7 +212,8 @@
    }
 
    public static <T> Codec<SimpleRegistry<T>> func_241745_c_(RegistryKey<? extends Registry<T>> p_241745_0_, Lifecycle p_241745_1_, Codec<T> p_241745_2_) {
-      return Codec.unboundedMap(ResourceLocation.field_240908_a_.xmap(RegistryKey.func_240902_a_(p_241745_0_), RegistryKey::func_240901_a_), p_241745_2_).xmap((p_239656_2_) -> {
+      // FORGE: Fix MC-197860
+      return new net.minecraftforge.common.LenientUnboundedMapCodec<>(ResourceLocation.field_240908_a_.xmap(RegistryKey.func_240902_a_(p_241745_0_), RegistryKey::func_240901_a_), p_241745_2_).xmap((p_239656_2_) -> {
          SimpleRegistry<T> simpleregistry = new SimpleRegistry<>(p_241745_0_, p_241745_1_);
          p_239656_2_.forEach((p_239653_2_, p_239653_3_) -> {
             simpleregistry.func_218381_a(p_239653_2_, p_239653_3_, p_241745_1_);