[perl #74072] Cross meta operator flattens arrays

[via RT]

# New Ticket Created by  Moritz Lenz 
# Please include the string:  [perl #74072]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=74072 >


22:03 <@TimToady> rakudo: say [1,2] X~ <a b>   # /me suspects a bug
22:03 <+p6eval> rakudo c41cf3: OUTPUT«1a1b2a2b␤»
22:03 <@TimToady> yes, a bug
22:03 <@TimToady> [1,2] should not flatten in list context
22:04 <@moritz_> rakudo: .say for 1, [2, 3], 4
22:04 <+p6eval> rakudo c41cf3: OUTPUT«1␤23␤4␤»
22:04 <@moritz_> and I know why... the signature of X and X~ says Iterable
22:04 <@TimToady> I think X~ is taking liberties
22:04  * moritz_ reports