PLEASE HELP!!! I Can't Get The Brooklyn Theme Featured Product Size Variant To Work Correctly

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When I go to the featured product at the top of the homepage in Brooklyn theme, select a shirt size, select add to cart or buy it now, it doesn't carry the selected shirt size over to checkout. But when you click the "full details" button and go to the actual product page, select a size, it carries the selected size over to checkout. I have no clue why this happens.

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