diff --git a/api/src/main/java/com/lishid/openinv/internal/IAnySilentContainer.java b/api/src/main/java/com/lishid/openinv/internal/IAnySilentContainer.java
index c042777..ef78c76 100644
--- a/api/src/main/java/com/lishid/openinv/internal/IAnySilentContainer.java
+++ b/api/src/main/java/com/lishid/openinv/internal/IAnySilentContainer.java
@@ -98,11 +98,17 @@ public interface IAnySilentContainer {
 
             Directional directional = (Directional) blockData;
             BlockFace face = directional.getFacing();
-            boundingBox.shift(face.getDirection());
-            // Return whether or not bounding boxes overlap.
-            return block.getRelative(face, 1).getBoundingBox().overlaps(boundingBox);
-        }
+            Block relative = block.getRelative(face, 1);
 
+            if (isShulkerIgnoreBoundingBox(relative)) {
+                // Certain special cases are ignored. Signs, simple redstone, etc.
+                return false;
+            }
+
+            boundingBox.expand(face.getDirection(), 0.5);
+            // Return whether or not bounding boxes overlap.
+            return relative.getBoundingBox().overlaps(boundingBox);
+        }
 
         if (!(blockState instanceof org.bukkit.block.Chest)) {
             return false;
@@ -140,6 +146,14 @@ public interface IAnySilentContainer {
         return isChestBlocked(relative);
     }
 
+    boolean isShulkerIgnoreBoundingBox(Block block);
+
+    /**
+     * Determine whether or not a chest is blocked.
+     *
+     * @param chest the chest block
+     * @return true if the chest block cannot be opened under ordinary circumstances
+     */
     default boolean isChestBlocked(Block chest) {
         org.bukkit.block.Block relative = chest.getRelative(0, 1, 0);
         return relative.getType().isOccluding()
diff --git a/internal/v1_16_R3/src/main/java/com/lishid/openinv/internal/v1_16_R3/AnySilentContainer.java b/internal/v1_16_R3/src/main/java/com/lishid/openinv/internal/v1_16_R3/AnySilentContainer.java
index 3e099c0..03a9173 100644
--- a/internal/v1_16_R3/src/main/java/com/lishid/openinv/internal/v1_16_R3/AnySilentContainer.java
+++ b/internal/v1_16_R3/src/main/java/com/lishid/openinv/internal/v1_16_R3/AnySilentContainer.java
@@ -19,6 +19,7 @@ package com.lishid.openinv.internal.v1_16_R3;
 import com.lishid.openinv.OpenInv;
 import com.lishid.openinv.internal.IAnySilentContainer;
 import java.lang.reflect.Field;
+import java.util.logging.Level;
 import net.minecraft.server.v1_16_R3.Block;
 import net.minecraft.server.v1_16_R3.BlockBarrel;
 import net.minecraft.server.v1_16_R3.BlockChest;
@@ -46,8 +47,10 @@ import net.minecraft.server.v1_16_R3.TileEntityEnderChest;
 import net.minecraft.server.v1_16_R3.TileEntityLootable;
 import net.minecraft.server.v1_16_R3.TileInventory;
 import net.minecraft.server.v1_16_R3.World;
+import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.Statistic;
+import org.bukkit.craftbukkit.v1_16_R3.CraftWorld;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.InventoryView;
 import org.jetbrains.annotations.NotNull;
@@ -66,6 +69,23 @@ public class AnySilentContainer implements IAnySilentContainer {
         }
     }
 
+    @Override
+    public boolean isShulkerIgnoreBoundingBox(org.bukkit.block.Block bukkitBlock) {
+        org.bukkit.World bukkitWorld = bukkitBlock.getWorld();
+        if (!(bukkitWorld instanceof CraftWorld)) {
+            bukkitWorld = Bukkit.getWorld(bukkitWorld.getUID());
+        }
+        if (!(bukkitWorld instanceof CraftWorld)) {
+            Exception exception = new IllegalStateException("AnySilentContainer access attempted on an unknown world!");
+            OpenInv.getPlugin(OpenInv.class).getLogger().log(Level.WARNING, exception.getMessage(), exception);
+            return false;
+        }
+
+        final World world = ((CraftWorld) bukkitWorld).getHandle();
+        final BlockPosition blockPosition = new BlockPosition(bukkitBlock.getX(), bukkitBlock.getY(), bukkitBlock.getZ());
+        return world.getType(blockPosition).d();
+    }
+
     @Override
     public boolean activateContainer(@NotNull final Player bukkitPlayer, final boolean silentchest,
                                      @NotNull final org.bukkit.block.Block bukkitBlock) {
diff --git a/internal/v1_17_R1/pom.xml b/internal/v1_17_R1/pom.xml
index 2cd9043..2c06c72 100644
--- a/internal/v1_17_R1/pom.xml
+++ b/internal/v1_17_R1/pom.xml
@@ -39,7 +39,7 @@
       <artifactId>spigot</artifactId>
       <groupId>org.spigotmc</groupId>
       <scope>provided</scope>
-      <version>1.17-R0.1-SNAPSHOT</version>
+      <version>1.17.1-R0.1-SNAPSHOT</version>
     </dependency>
     <dependency>
       <artifactId>openinvapi</artifactId>
diff --git a/internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/AnySilentContainer.java b/internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/AnySilentContainer.java
index 26a6266..672e890 100644
--- a/internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/AnySilentContainer.java
+++ b/internal/v1_17_R1/src/main/java/com/lishid/openinv/internal/v1_17_R1/AnySilentContainer.java
@@ -48,8 +48,10 @@ import net.minecraft.world.level.block.entity.TileEntityEnderChest;
 import net.minecraft.world.level.block.entity.TileEntityLootable;
 import net.minecraft.world.level.block.state.IBlockData;
 import net.minecraft.world.level.block.state.properties.BlockPropertyChestType;
+import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.Statistic;
+import org.bukkit.craftbukkit.v1_17_R1.CraftWorld;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.InventoryView;
 import org.jetbrains.annotations.NotNull;
@@ -69,6 +71,24 @@ public class AnySilentContainer implements IAnySilentContainer {
         }
     }
 
+    @Override
+    public boolean isShulkerIgnoreBoundingBox(org.bukkit.block.Block bukkitBlock) {
+        org.bukkit.World bukkitWorld = bukkitBlock.getWorld();
+        if (!(bukkitWorld instanceof CraftWorld)) {
+            bukkitWorld = Bukkit.getWorld(bukkitWorld.getUID());
+        }
+        if (!(bukkitWorld instanceof CraftWorld)) {
+            Exception exception = new IllegalStateException("AnySilentContainer access attempted on an unknown world!");
+            OpenInv.getPlugin(OpenInv.class).getLogger().log(Level.WARNING, exception.getMessage(), exception);
+            return false;
+        }
+
+        final World world = ((CraftWorld) bukkitWorld).getHandle();
+        final BlockPosition blockPosition = new BlockPosition(bukkitBlock.getX(), bukkitBlock.getY(), bukkitBlock.getZ());
+        // isLargeVoxelShape
+        return world.getType(blockPosition).d();
+    }
+
     @Override
     public boolean activateContainer(
             @NotNull final Player bukkitPlayer,
diff --git a/scripts/get_spigot_versions.sh b/scripts/get_spigot_versions.sh
index e524912..29376e0 100644
--- a/scripts/get_spigot_versions.sh
+++ b/scripts/get_spigot_versions.sh
@@ -16,7 +16,7 @@
 #
 
 # TODO FIGURE OUT AND REMOVE WHEN LESS STRESS
-hacky_versions=("1.16.5-R0.1-SNAPSHOT" "1.17-R0.1-SNAPSHOT")
+hacky_versions=("1.16.5-R0.1-SNAPSHOT" "1.17.1-R0.1-SNAPSHOT")
 for hacky_version in "${hacky_versions[@]}"; do
   echo "$hacky_version"
 done