The CSS or something changed after the update to 8.4.1. The text on my Add To Cart buttons is now pushed to the right and there is a large gap to the left.
I have tried to change the padding in the button class “button product_type_simple add_to_cart_button ajax_add_to_cart add-to-cart-loop” but that does not seems to fix the issue.
Sorry to hear about the inconvenience. Kindly, please share your Site WP-ADMIN Login details in the Private Content field so that we can check this concern on your Site and help you out accordingly.