[perl #125129] [BUG] cannot set parent's class attributes in constructor

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# New Ticket Created by  Tobias Leich 
# Please include the string:  [perl #125129]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=125129 >


class Foo { has $.x is rw }; class Bar is Foo { }; my Foo $u .= new(:5x); say 
$u.x; $u = Bar.new(Foo{:12x});
rakudo-moar a34d02: OUTPUT«5␤Default constructor for 'Bar' only takes named 
arguments␤  in block <unit> at /tmp/FrBrn8xOI_:1␤␤»

I guess this needs to translate to something else than Any in order to make it 
work:
class Foo { }; say (Foo{:12x})
rakudo-moar a34d02: OUTPUT«(Any)␤»