Try sending fake operator packets to support non-OP

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/BukkitPlayer.java

@@ -33,6 +33,7 @@ import com.sk89q.worldedit.session.SessionKey;
 import com.sk89q.worldedit.util.HandSide;
 import com.sk89q.worldedit.world.World;
 import com.sk89q.worldedit.world.block.BlockStateHolder;
+import com.sk89q.worldedit.world.block.BlockTypes;
 import com.sk89q.worldedit.world.gamemode.GameMode;
 import com.sk89q.worldedit.world.gamemode.GameModes;
 import org.bukkit.Bukkit;
@@ -252,6 +253,9 @@ public class BukkitPlayer extends AbstractPlayerActor {
                 BukkitImplAdapter adapter = WorldEditPlugin.getInstance().getBukkitImplAdapter();
                 if (adapter != null) {
                     adapter.sendFakeNBT(player, pos, ((BaseBlock) block).getNbtData());
+                    if (block.getBlockType() == BlockTypes.STRUCTURE_BLOCK) {
+                        adapter.sendFakeOP(player);
+                    }
                 }
             }
         }

worldedit-bukkit/src/main/java/com/sk89q/worldedit/bukkit/adapter/BukkitImplAdapter.java

@@ -113,4 +113,12 @@ public interface BukkitImplAdapter {
      * @param nbtData The NBT Data
      */
     void sendFakeNBT(Player player, Vector pos, CompoundTag nbtData);
+
+    /**
+     * Make the client think it has operator status.
+     * This does not give them any operator capabilities.
+     *
+     * @param player The player
+     */
+    void sendFakeOP(Player player);
 }