[perl #71086] [BUG] Unexpected result when doing .kv from within the List class in Rakudo

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
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<masak> rakudo: for <a b c>.kv { .say }
<p6eval> rakudo 7ef386: 0␤a␤1␤b␤2␤c␤
<masak> rakudo: class List is also { method d { for self.kv { .say } }
}; <a b c>.d
<p6eval> rakudo 7ef386: 0a␤1b␤2c␤
* masak submits rakudobug

I'd expect those two lines of code to yield the same results. Either
my expectations are wrong, or Rakudo is.