diff --git a/core/src/main/java/org/geysermc/geyser/level/block/GeyserCustomBlockData.java b/core/src/main/java/org/geysermc/geyser/level/block/GeyserCustomBlockData.java
index ba0fdf17d..a454687f3 100644
--- a/core/src/main/java/org/geysermc/geyser/level/block/GeyserCustomBlockData.java
+++ b/core/src/main/java/org/geysermc/geyser/level/block/GeyserCustomBlockData.java
@@ -26,10 +26,10 @@
 package org.geysermc.geyser.level.block;
 
 import it.unimi.dsi.fastutil.objects.*;
-import lombok.EqualsAndHashCode;
 import lombok.Value;
 import org.checkerframework.checker.nullness.qual.NonNull;
 import org.geysermc.geyser.Constants;
+import org.geysermc.geyser.GeyserImpl;
 import org.geysermc.geyser.api.block.custom.CustomBlockData;
 import org.geysermc.geyser.api.block.custom.CustomBlockPermutation;
 import org.geysermc.geyser.api.block.custom.CustomBlockState;
@@ -63,12 +63,15 @@ public class GeyserCustomBlockData implements CustomBlockData {
             this.properties = Object2ObjectMaps.unmodifiable(new Object2ObjectArrayMap<>(builder.properties));
             Object2ObjectMap<String, Object> defaultProperties = new Object2ObjectOpenHashMap<>(this.properties.size());
             for (CustomBlockProperty<?> property : properties.values()) {
-                if (property.values().isEmpty() || property.values().size() > 16) {
-                    throw new IllegalStateException(property.name() + " must contain 1 to 16 values.");
+                if (property.values().size() > 16) {
+                    GeyserImpl.getInstance().getLogger().warning(property.name() + " contains more than 16 values, but BDS specifies it should not. This may break in future versions.");
                 }
                 if (property.values().stream().distinct().count() != property.values().size()) {
                     throw new IllegalStateException(property.name() + " has duplicate values.");
                 }
+                if (property.values().isEmpty()) {
+                    throw new IllegalStateException(property.name() + " contains no values.");
+                }
                 defaultProperties.put(property.name(), property.values().get(0));
             }
             this.defaultProperties = Object2ObjectMaps.unmodifiable(defaultProperties);
diff --git a/core/src/main/java/org/geysermc/geyser/registry/mappings/versions/MappingsReader_v1.java b/core/src/main/java/org/geysermc/geyser/registry/mappings/versions/MappingsReader_v1.java
index a2afc6b3f..99aa08902 100644
--- a/core/src/main/java/org/geysermc/geyser/registry/mappings/versions/MappingsReader_v1.java
+++ b/core/src/main/java/org/geysermc/geyser/registry/mappings/versions/MappingsReader_v1.java
@@ -26,7 +26,6 @@
 package org.geysermc.geyser.registry.mappings.versions;
 
 import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.node.ArrayNode;
 import com.google.common.base.CharMatcher;
 
@@ -286,7 +285,10 @@ public class MappingsReader_v1 extends MappingsReader {
         Set<String> booleanValuesSet = new HashSet<>();
         Map<String, Map<String, Boolean>> stateKeyBools = new HashMap<>();
 
+        
         for (String state : usedStateKeys) {
+            if (!state.contains("[")) continue;
+
             String[] pairs = splitStateString(state);
 
             for (String pair : pairs) {
@@ -411,9 +413,9 @@ public class MappingsReader_v1 extends MappingsReader {
         float cornerY = clamp((float) boundingBox.getMiddleY() * 16 - offsetY, 0, 16);
         float cornerZ = clamp((float) boundingBox.getMiddleZ() * 16 - 8 - offsetZ, -8, 8);
 
-        float sizeX = clamp((float) boundingBox.getSizeX() * 16, -8, 8);
+        float sizeX = clamp((float) boundingBox.getSizeX() * 16, 0, 16);
         float sizeY = clamp((float) boundingBox.getSizeY() * 16, 0, 16);
-        float sizeZ = clamp((float) boundingBox.getSizeZ() * 16, -8, 8);
+        float sizeZ = clamp((float) boundingBox.getSizeZ() * 16, 0, 16);
 
         BoxComponent boxComponent = new BoxComponent(cornerX, cornerY, cornerZ, sizeX, sizeY, sizeZ);
 
@@ -479,7 +481,7 @@ public class MappingsReader_v1 extends MappingsReader {
     }
 
     public float clamp(float value, float min, float max) {
-        return Math.max(min, Math.min(value, max));
+        return Math.max(min, Math.min(max, value));
     }
 
 }