"add-to-cart" not working inside block (?)

Hello,

I am trying to show an "add-to-cart" button inside a block. The behaviour is not correct. Tried moving the "env-autofill="false" as per https://forum.grabaperch.com/forum/05-16-2016-product-without-variant-not-added-to-cart#reply_form but didn't help.

I noticed that the productID is not being printed as value of the generated hidden input.

When I duplicate the "add-to-cart" code outside of the block it prints the value and works as expected.

The not working template

 <perch:block type="cta-panels" label="Panel con atc button">
            <div class="panels__item panels--cta panels--<perch:shop id="panel-color" type="radio" required="true" label="Color" options="Rosa|rosa, Gris|gris" />  ">
                <perch:shop id="text" type="text" label="Text" required="true" title="true" />
                <perch:form id="add_to_cart" app="perch_shop" action="/cart">
                    <perch:input id="product" type="hidden" value="<perch:shop id="productID" type="hidden" />" env-autofill="false" />
                    <perch:input type="submit" class="cta cta-adc" value="Decidido. Lo compro ya!" />
                </perch:form>
            </div>
          </perch:block>

Diagnostics from the empty card

Debug Message
[15] SELECT p.pagePath, pr.routePattern, pr.routeRegExp, p.pageTemplate FROM perch2_pages p LEFT JOIN perch2_page_routes pr ON p.pageID=pr.pageID ORDER BY pr.routeOrder ASC, p.pagePath ASC
Matched page: /cart, so not using routes.
Using master page: /templates/pages/shop/cart.php
[1] SELECT * FROM perch2_members_sessions WHERE sessionID='8cc634264e73fc66dcfbde9d193feff2fea77862' AND sessionHttpFootprint='b57a3b7c43e769ac29216f5c4ad5ba978bcb9b20' AND sessionExpires>'2016-08-28 13:24:04' LIMIT 1
User is logged in
[1] SELECT * FROM perch2_pages WHERE pagePath='/cart' LIMIT 1
[1] SELECT * FROM perch2_shop_cart WHERE cartID=48
[1] SELECT * FROM perch2_shop_cart WHERE cartID=48
[36] SELECT DISTINCT settingID, settingValue FROM perch2_settings WHERE userID=0
Using sub-template: /templates/shop/products/servicio/listwithtitle.html
Using sub-template: /templates/shop/products/socialproof.html
Using sub-template: /templates/shop/products/servicio/listwithimage.html
[1] SELECT itemID, itemQty FROM perch2_shop_cart_items WHERE cartID=48 AND productID=0
[1] SELECT * FROM perch2_shop_products WHERE productID=0 AND productDeleted IS NULL LIMIT 1
Limiting based on stock.
------------------------------ Calculating cart ------------------------------
[1] SELECT * FROM perch2_shop_cart WHERE cartID=48
[1] SELECT * FROM perch2_shop_cart WHERE cartID=48
[1] SELECT * FROM perch2_shop_tax_locations WHERE locationID=1 AND locationDeleted IS NULL LIMIT 1
[1] SELECT locationID FROM perch2_shop_tax_locations WHERE locationIsHome=1 LIMIT 1
[1] SELECT * FROM perch2_shop_tax_locations WHERE locationID=1 AND locationDeleted IS NULL LIMIT 1
[1] SELECT * FROM perch2_shop_customers WHERE memberID=1
[1] SELECT * FROM perch2_shop_currencies WHERE currencyID=44 LIMIT 1
[1] SELECT COUNT(productID) AS product_count, SUM(itemQty) AS item_count FROM perch2_shop_cart_items WHERE cartID=48
Tax mode: inc
[nil] SELECT * FROM perch2_shop_cart_items WHERE cartID=48 ORDER BY itemID ASC
UPDATE perch2_shop_cart SET cartTotalItems=NULL, cartTotalProducts='0', cartTotalWithTax='0.00', cartTotalWithoutTax='0.00' WHERE cartID='48'
INSERT INTO perch2_shop_cart_data(cartID,productID,cartData) VALUES('48','','{\"product\":\"\"}')
Using template: /templates/pages/attributes/default.html
Using sub-template: /templates/pages/attributes/seo.html
Using template: /templates/members/login/login_form.html
[3] SELECT * FROM perch2_pages WHERE pageNew=0 AND pageHidden=0 AND pageDepth >=0 AND pageDepth<=1 ORDER BY pageTreePosition ASC
[1] SELECT pageTreePosition FROM perch2_pages WHERE pagePath='/cart' LIMIT 1
[1] SELECT pageID FROM perch2_pages WHERE pageTreePosition IN ('000-010', '000') ORDER BY pageTreePosition DESC
[3] Using template: /templates/navigation/item.html
[2] SELECT regionKey, regionHTML FROM perch2_content_regions WHERE regionPage='/cart' OR regionPage='*' ORDER BY regionPage DESC
Using template: /templates/shop/cart/cart.html

Could you please help?