TO SQUASH: A lot of things.

Assets/Scripts/Game/Balls/BallBase.cs

@@ -14,6 +14,8 @@ public class BallBase : MonoBehaviour
 
     protected Vector2 speed;
 
+    protected bool affectedByMagnet = true;
+
     void OnTriggerEnter2D(Collider2D other)
     {
         if(other.gameObject.CompareTag("Bar"))

Assets/Scripts/Game/Balls/NukeBall.cs

@@ -31,6 +31,9 @@ public class NukeBall : BallBase
     // Start is called once before the first execution of Update after the MonoBehaviour is created
     void Start()
     {
+        // NukeBall is not affected by magnets, unlike other balls.
+        affectedByMagnet = false;
+
         // Cache frequently used components once.
         audioSource = GetComponent<AudioSource>();
         animator = GetComponent<Animator>();