Reddit User NSR is claiming that after putting his Nintendo Switch in the dock some weeks ago and pulled it out to realise that it had been bent during his play-time.
He claims that he had played The Legend of Zelda: Breath of the Wild for 40-50 hours without removing it from the dock, which would obviously mean that the Nintendo Switch got quite hot and potentially stayed hot.
Other Redditors were quick to comment and say that their Nintendo Switch units were also slightly bent, but as far as we can see, the post has 3500+ comments and it does seem to be an isolated issue.