In season 22, episode 13 the first story called "The AI" ends with
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something very similar to that episode of Black Mirror with the woman who had a copy of herself in her Alexa-type device
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a woman turning into a cat and part of that transformation involves her getting smaller. It's not much but toward the end she mentions that she's shrunk by at least a foot and that she can't see herself in the mirror anymore.
Does anyone else know of any others?