Fixed with 6cec6b7218650aff1780a4dd , tests needed
> On 26 Aug 2017, at 10:35, Sam S. via RT <perl6-bugs-follo...@perl.org> wrote:
>
> Shorter test-case:
>
> ➜ say :{ a => 1, b => 2 }.FLATTENABLE_HASH;
> {Str|a => a => 1, Str|b => b => 2}
>
> Compare to a normal Hash which works fine:
>
> ➜ say { a => 1, b => 2 }.FLATTENABLE_HASH;
> {a => 1, b => 2}
