This is the desired result: https://auroriax.github.io/PuzzleScript/editor.html?hack=530ddf2862ddd088ccec38b2b53682fb
However, if you add bomb1, bomb2 or bomb3 or a combination of these to the second layer, wonky stuff happens - the sprites seem to grow much larger and go out of the canvas (more visible when the editor is turned on with E)
I assume this is because that makes the object appear twice in the layer.
Related discussion: https://groups.google.com/g/puzzlescript/c/QVR1oAYgP-o