Instruction clone wasnt creating new jump lists...

src/main/java/net/runelite/deob/attributes/code/Instruction.java

@@ -33,14 +33,21 @@ public abstract class Instruction implements Cloneable
 	@Override
 	public Instruction clone()
 	{
+		Instruction i;
 		try
 		{
-			return (Instruction) super.clone();
+			i = (Instruction) super.clone();
 		}
 		catch (CloneNotSupportedException ex)
 		{
 			throw new RuntimeException();
 		}
+		
+		i.block = null;
+		i.from = new ArrayList<>();
+		i.jump = new ArrayList<>();
+		
+		return i;
 	}
 	
 	public void load(DataInputStream is) throws IOException

src/main/java/net/runelite/deob/attributes/code/instructions/LookupSwitch.java

@@ -15,6 +15,7 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.stream.Collectors;
 
 public class LookupSwitch extends Instruction implements JumpingInstruction
 {
@@ -144,6 +145,6 @@ public class LookupSwitch extends Instruction implements JumpingInstruction
 		for (Instruction i : branchi)
 			list.add(i);
 		list.add(defi);
-		return list;
+		return list.stream().distinct().collect(Collectors.toList());
 	}
 }

src/main/java/net/runelite/deob/attributes/code/instructions/TableSwitch.java

@@ -14,6 +14,7 @@ import java.io.DataOutputStream;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 public class TableSwitch extends Instruction implements JumpingInstruction
 {
@@ -140,6 +141,6 @@ public class TableSwitch extends Instruction implements JumpingInstruction
 		for (Instruction i : branchi)
 			list.add(i);
 		list.add(defi);
-		return list;
+		return list.stream().distinct().collect(Collectors.toList());
 	}
 }

src/main/java/net/runelite/deob/deobfuscators/MethodInliner.java

@@ -99,7 +99,6 @@ public class MethodInliner implements Deobfuscator
 			assert ins.getInstructions().get(invokeIdx).getInstructions() == ins;
 			
 			int lvtIndex = code.getMaxLocals(),
-				//startLvtIndex = lvtIndex,
 				theirLocals = invokedMethod.getCode().getMaxLocals();
 			
 			if (lvtIndex + theirLocals > 127)