Add to cart : Since element use form, “Add To Cart” button must be <button type="submit"> instead of <a> tag. Product Filter : Radio buttons or check boxes with the same name attribute must be contained within a <fieldset> element. Bricks use <ul>
so, I’ve checked the “Add to cart” element, and checked the frontend in my install, and on my install, it’s a <button> element.
Can you let me know where you test it? I’ve tested it on single product page.
thanks. I was able to reproduce it in a loop. I also check “Storefront” theme, and there is also a tag, but because there is no quantity selector. So, if you want, you can disable quantity selector (from settings), and there will be no form, so a tag is ok.
Anyway, I’ve created an internal report about this.