It's not a bug; it's a misfeature. When you broadcast a list, it takes the first item to be the sprite you want (so instead of broadcast it just sends to one sprite) and the second item is the actual message. Now that we have SEND there's no need for this but Jens doesn't want to break old projects.
This is the problem: i don't want to send a message to a sprite but to all the clones of this sprite...
this is how I solved the problem (send instead of broadcast), i don't know if it is optimized...
send:
(I added a pause because the "send and wait" block is nonexistent ...) (why we have the "broadcast and wait" block but not the "send and wait" block ?)