diff --git a/worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_15_2/MapChunkUtil_1_15_2.java b/worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_15_2/MapChunkUtil_1_15_2.java
index e12648f4a..7a7bac16c 100644
--- a/worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_15_2/MapChunkUtil_1_15_2.java
+++ b/worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_15_2/MapChunkUtil_1_15_2.java
@@ -9,9 +9,9 @@ public class MapChunkUtil_1_15_2 extends MapChunkUtil<PacketPlayOutMapChunk> {
         fieldZ = PacketPlayOutMapChunk.class.getDeclaredField("b");
         fieldBitMask = PacketPlayOutMapChunk.class.getDeclaredField("c");
         fieldHeightMap = PacketPlayOutMapChunk.class.getDeclaredField("d");
-        fieldChunkData = PacketPlayOutMapChunk.class.getDeclaredField("e");
-        fieldBlockEntities = PacketPlayOutMapChunk.class.getDeclaredField("f");
-        fieldFull = PacketPlayOutMapChunk.class.getDeclaredField("g");
+        fieldChunkData = PacketPlayOutMapChunk.class.getDeclaredField("f");
+        fieldBlockEntities = PacketPlayOutMapChunk.class.getDeclaredField("g");
+        fieldFull = PacketPlayOutMapChunk.class.getDeclaredField("h");
         fieldX.setAccessible(true);
         fieldZ.setAccessible(true);
         fieldBitMask.setAccessible(true);
diff --git a/worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/queue/SingleThreadQueueExtent.java b/worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/queue/SingleThreadQueueExtent.java
index 1f3ed59de..62a199e6a 100644
--- a/worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/queue/SingleThreadQueueExtent.java
+++ b/worldedit-core/src/main/java/com/boydti/fawe/beta/implementation/queue/SingleThreadQueueExtent.java
@@ -156,7 +156,12 @@ public class SingleThreadQueueExtent extends ExtentBatchProcessorHolder implemen
         }
 
         if (Fawe.isMainThread()) {
-            return (V) chunk.call();
+            V result = (V)chunk.call();
+            if (result == null){
+                return (V) (Future) Futures.immediateFuture(null);
+            }else{
+                return result;
+            }
         }
 
         return (V) Fawe.get().getQueueHandler().submit(chunk);
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/extent/MaskingExtent.java b/worldedit-core/src/main/java/com/sk89q/worldedit/extent/MaskingExtent.java
index 7aea7c97a..7cb88c422 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/extent/MaskingExtent.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/extent/MaskingExtent.java
@@ -108,7 +108,7 @@ public class MaskingExtent extends AbstractDelegateExtent implements IBatchProce
     @Override
     public void applyBlock(FilterBlock block) {
         int ordinal = block.getOrdinal();
-        if (ordinal != 0 && !mask.test(getExtent(), block)) {
+        if (!mask.test(getExtent(), block)) {
             block.setOrdinal(0);
         }
     }