the boxes might not be but the edges/bevels are
this isn't an optical illusion. Cover the arrows and you can still see when the direction changes
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piss and shit, Fri 19 Aug 2022, 13:03,
Reply)
Cover all but one line and it's still apparent.
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Tony Hayers DEFUND THE POLICE, Fri 19 Aug 2022, 16:31,
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