Resolved.

I just solved the kata in JS with my solution from other languages and I have no good idea what this issue is about. Everything seems to work as expected? Broken formatting in the original post is not helpful either.

I'm not really sure I understand your issue, but it seems like a code issue to me. You can represent 4 as 2 + 1 + 1, just like you can represent 16 as 8 + 4 + 4, and 256 as 128 + 64 + 64. I guess your assumption is wrong..?