Possible set equality bug

Run Settings
LanguageRaku
Language Version
Run Command
my $word1 = 'abba';
my $word2 = 'abbba';
say $word1 === $word2;
say $word1 (==) $word2;
say $word1.comb === $word2.comb;
say $word1.comb (==) $word2.comb;
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