diff --git a/worldedit-bukkit/adapters/adapter-1_17_1/build.gradle.kts b/worldedit-bukkit/adapters/adapter-1_17_1/build.gradle.kts
index f48780506..218701aae 100644
--- a/worldedit-bukkit/adapters/adapter-1_17_1/build.gradle.kts
+++ b/worldedit-bukkit/adapters/adapter-1_17_1/build.gradle.kts
@@ -3,7 +3,7 @@ plugins {
 }
 
 applyPaperweightAdapterConfiguration(
-        "1.17.1-R0.1-20211109.085555-183"
+        "1.17.1-R0.1-20211120.192557-194"
 )
 
 repositories {
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/scripting/MinecraftHidingClassShutter.java b/worldedit-core/src/main/java/com/sk89q/worldedit/scripting/MinecraftHidingClassShutter.java
new file mode 100644
index 000000000..e016335c2
--- /dev/null
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/scripting/MinecraftHidingClassShutter.java
@@ -0,0 +1,34 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.scripting;
+
+import org.mozilla.javascript.ClassShutter;
+
+/**
+ * Hides Minecraft's obfuscated names from scripts.
+ */
+class MinecraftHidingClassShutter implements ClassShutter {
+
+    @Override
+    public boolean visibleToScripts(String fullClassName) {
+        return fullClassName.contains(".") || fullClassName.length() >= 4;
+    }
+
+}
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/scripting/RhinoCraftScriptEngine.java b/worldedit-core/src/main/java/com/sk89q/worldedit/scripting/RhinoCraftScriptEngine.java
index 5326317ef..07e18b71c 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/scripting/RhinoCraftScriptEngine.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/scripting/RhinoCraftScriptEngine.java
@@ -50,6 +50,7 @@ public class RhinoCraftScriptEngine implements CraftScriptEngine {
             throws Throwable {
         RhinoContextFactory factory = new RhinoContextFactory(timeLimit);
         Context cx = factory.enterContext();
+        cx.setClassShutter(new MinecraftHidingClassShutter());
         ScriptableObject scriptable = new ImporterTopLevel(cx);
         Scriptable scope = cx.initStandardObjects(scriptable);
 
diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/util/TargetBlock.java b/worldedit-core/src/main/java/com/sk89q/worldedit/util/TargetBlock.java
index cb83d5873..4c93fafd2 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/util/TargetBlock.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/util/TargetBlock.java
@@ -170,17 +170,15 @@ public class TargetBlock {
      * @return Block
      */
     public Location getAnyTargetBlock() {
-        boolean searchForLastBlock = true;
         Location lastBlock = null;
         while (getNextBlock() != null) {
             if (stopMask.test(targetPos)) {
                 break;
             } else {
-                if (searchForLastBlock) {
-                    lastBlock = getCurrentBlock();
-                    if (lastBlock.getBlockY() <= world.getMinY() || lastBlock.getBlockY() >= world.getMaxY()) {
-                        searchForLastBlock = false;
-                    }
+                lastBlock = getCurrentBlock();
+                if (lastBlock.getBlockY() < world.getMinY()
+                        || lastBlock.getBlockY() > world.getMaxY()) {
+                    return null;
                 }
             }
         }