[perl #129878] [BUG][UNI] Stringifying a List adds in spaces between each item

[Samantha McVey via RT]

Actually this is not a bug at all, and it is not limited to those characters.

If you do ('a' xx 2).chars you will get 3 as well. If you want to join the list 
after you create it:

say ('a' xx 2).join.chars #> 3

Rejecting.