From @coke

20​:41 < [Coke]> r​: [[2, 3], [4, [5, 6]]]».squish.say
20​:41 <+camelia> rakudo-jvm d98dc8​: OUTPUT«((2 3 Mu.new Mu.new Mu.new Mu.new
  Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new
  Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new
  Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new
  Mu.new Mu.new Mu.new Mu.new Mu.new…»
20​:41 <+camelia> ..rakudo-moar d98dc8​: OUTPUT«((2 3) (4 [5 6]))␤»

--
Will "Coke" Coleda

From @peschwa

On Sat Oct 31 17​:42​:32 2015, coke wrote​:

20​:41 < [Coke]> r​: [[2, 3], [4, [5, 6]]]».squish.say
20​:41 <+camelia> rakudo-jvm d98dc8​: OUTPUT«((2 3 Mu.new Mu.new Mu.new
Mu.new
Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new
Mu.new Mu.new
Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new
Mu.new Mu.new
Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new Mu.new
Mu.new Mu.new
Mu.new Mu.new Mu.new Mu.new Mu.new…»
20​:41 <+camelia> ..rakudo-moar d98dc8​: OUTPUT«((2 3) (4 [5 6]))␤»

This has been fixed in Rakudo commit ec52cce​:
$ ./perl6-j --version
This is Rakudo version 2016.03-99-g46388f4 built on JVM
implementing Perl 6.c.
$ ./perl6-j -e'[[2,3],[4,[5,6]]]>>.squish.say'
((2 3) (4 [5 6]))

The RT System itself - Status changed from 'new' to 'open'

From @usev6

On Fri Apr 08 05​:51​:16 2016, peschwa@​gmail.com wrote​:

This has been fixed in Rakudo commit ec52cce​:
$ ./perl6-j --version
This is Rakudo version 2016.03-99-g46388f4 built on JVM
implementing Perl 6.c.
$ ./perl6-j -e'[[2,3],[4,[5,6]]]>>.squish.say'
((2 3) (4 [5 6]))

Great. I unfudged two now passing tests. I'm closing this ticket as 'resolved'.

@usev6 - Status changed from 'open' to 'resolved'