Are you creating/spawning the bullets on the correct layer?
After adding layers, the numbering of layers changes. Thanks.
So in future I should, after adding a layer, check all objects that depend on layer-visibility?
Is it of any use to add a number and name to a layer?
So that, in event sheet, you think: I want the bullet always visible on the "ground layout", number x (no matter what it will be in future).