diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/block/behavior/StackableBlockBehavior.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/block/behavior/StackableBlockBehavior.java
index 5e68479af..b367c804c 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/block/behavior/StackableBlockBehavior.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/block/behavior/StackableBlockBehavior.java
@@ -71,7 +71,9 @@ public class StackableBlockBehavior extends BukkitBlockBehavior {
         if (this.stackSound != null) {
             world.playBlockSound(new Vec3d(location.getX(), location.getY(), location.getZ()), this.stackSound);
         }
-        item.count(item.count() - 1);
+        if (!player.isCreativeMode()) {
+            item.count(item.count() - 1);
+        }
         player.swingHand(hand);
     }
 
diff --git a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/block/behavior/StairsBlockBehavior.java b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/block/behavior/StairsBlockBehavior.java
index 790b12541..2ffdcc510 100644
--- a/bukkit/src/main/java/net/momirealms/craftengine/bukkit/block/behavior/StairsBlockBehavior.java
+++ b/bukkit/src/main/java/net/momirealms/craftengine/bukkit/block/behavior/StairsBlockBehavior.java
@@ -42,11 +42,13 @@ public class StairsBlockBehavior extends BukkitBlockBehavior {
     public ImmutableBlockState updateStateForPlacement(BlockPlaceContext context, ImmutableBlockState state) {
         Direction clickedFace = context.getClickedFace();
         BlockPos clickedPos = context.getClickedPos();
-        Object fluidState = FastNMS.INSTANCE.method$Level$getFluidState(context.getLevel().serverWorld(), LocationUtils.toBlockPos(clickedPos));
         ImmutableBlockState blockState = state.owner().value().defaultState()
                 .with(this.facingProperty, context.getHorizontalDirection().toHorizontalDirection())
-                .with(this.halfProperty, clickedFace != Direction.DOWN && (clickedFace == Direction.UP || !(context.getClickLocation().y - clickedPos.y() > 0.5)) ? SingleBlockHalf.BOTTOM : SingleBlockHalf.TOP)
-                .with(this.waterloggedProperty, FastNMS.INSTANCE.method$FluidState$getType(fluidState) == MFluids.WATER);
+                .with(this.halfProperty, clickedFace != Direction.DOWN && (clickedFace == Direction.UP || !(context.getClickLocation().y - clickedPos.y() > 0.5)) ? SingleBlockHalf.BOTTOM : SingleBlockHalf.TOP);
+        if (super.waterloggedProperty != null) {
+            Object fluidState = FastNMS.INSTANCE.method$Level$getFluidState(context.getLevel().serverWorld(), LocationUtils.toBlockPos(clickedPos));
+            blockState = blockState.with(this.waterloggedProperty, FastNMS.INSTANCE.method$FluidState$getType(fluidState) == MFluids.WATER);
+        }
         return blockState.with(this.shapeProperty, getStairsShape(blockState, context.getLevel().serverWorld(), clickedPos));
     }
 
@@ -65,7 +67,7 @@ public class StairsBlockBehavior extends BukkitBlockBehavior {
         int stateId = BlockStateUtils.blockStateToId(blockState);
         ImmutableBlockState immutableBlockState = BukkitBlockManager.instance().getImmutableBlockState(stateId);
         if (immutableBlockState == null || immutableBlockState.isEmpty()) return blockState;
-        if (immutableBlockState.get(this.waterloggedProperty)) {
+        if (super.waterloggedProperty != null && immutableBlockState.get(this.waterloggedProperty)) {
             FastNMS.INSTANCE.method$LevelAccessor$scheduleFluidTick(VersionHelper.isOrAbove1_21_2() ? args[2] : args[3], VersionHelper.isOrAbove1_21_2() ? args[3] : args[4], MFluids.WATER, 5);
         }
         Direction direction = DirectionUtils.fromNMSDirection(VersionHelper.isOrAbove1_21_2() ? args[4] : args[0]);
diff --git a/common-files/src/main/resources/resources/default/configuration/blocks.yml b/common-files/src/main/resources/resources/default/configuration/blocks.yml
index 895090c45..f222d3436 100644
--- a/common-files/src/main/resources/resources/default/configuration/blocks.yml
+++ b/common-files/src/main/resources/resources/default/configuration/blocks.yml
@@ -272,6 +272,8 @@ items#misc:
           behaviors:
             - type: sturdy_base_block
               direction: down
+              support-types:
+                - full
             - type: stackable_block
               property: pebble
               items:
diff --git a/common-files/src/main/resources/resources/default/configuration/palm_tree.yml b/common-files/src/main/resources/resources/default/configuration/palm_tree.yml
index dbc78deaf..618c6f09f 100644
--- a/common-files/src/main/resources/resources/default/configuration/palm_tree.yml
+++ b/common-files/src/main/resources/resources/default/configuration/palm_tree.yml
@@ -545,7 +545,7 @@ items:
                 - minecraft:mineable/axe
                 - minecraft:stairs
                 - minecraft:wooden_stairs
-          behaviors:
+          behavior:
             type: stairs_block
           states:
             template: default:block_state/stairs