Question Instantiated Object falls through the ground

So here's my dilemma. I have a 2D game where the character goes around destroying creatures. When the creatures die gold then appears in their place.

However, when I instantiate the gold it falls through the floor and does not collide.

1. The gold is instantiated from a prefab
2. When I put the gold object manually on the screen it works fine.
3. The gold has a rigidbody 2d and a collider that is not a trigger

After researching it seems it as something to do with the object being a clone. I can not find anything in the unity docs that shows why when I instantiate the gold object its collider is not working.

Any ideas?

 

The instantiated gold is just a copy of what I put on the screen manually. There are no differences. Here's the code I use to instantiate the gold:

Code (CSharp):

1.             var floatnewX = transform.position.x;   // leave gold at enemy's x position
2.             var bobsYPos = FindObjectOfType<Bob>().transform.position.y;    // leave gold at bob's y position
3.             // drop some gold after the enemy has died
4.             Instantiate(weaponGold, new Vector3(floatnewX, bobsYPos, gameObject.transform.position.z), Quaternion.identity);
5.             Destroy(gameObject);

As you can see it's a basic instantiation. Nothing fancy. I set the coordinates for the new gold will appear, then put it on the screen, then destroy the enemy object.

When I manually put the gold on the screen it works fine. When I put an instance of the gold on the screen it does not.

I am using Unity version 2019.4.6f1

 

I figured it out. The gravity was set too high and falling right through the collider on the floor. Once I set it to fall slower, it worked fine.

 

thank you for the tip and the advice. Much appreciated.