Can't add grouped product, with out of stock sub product, to cart

[kvydiuk]

When "Stores -> Configuration -> Catalog -> Inventory -> Options -> Display Out of Stock Products" config enabled.
Can't add grouped product, which haves out of stock sub product, to cart.

Preconditions

1. Magento 2.1.8 CE/EE
2. nginx/1.10.3
3. Ver 15.1 Distrib 10.0.31-MariaDB
4. PHP 7.0.22-0ubuntu0.16.04.1

Steps to reproduce

1. Create grouped product with one out of stock sub product
2. Set default sub products quantities biggest then "0"
   http://pix.toile-libre.org/upload/original/1514981790.png
3. Set "Stores -> Configuration -> Catalog -> Inventory -> Options -> Display Out of Stock Products" to "Yes"
4. Go to grouped product PDP
5. Add product to cart

Expected result

1. Sub products which are "In stock" is added to cart

Actual result

1. No one product added to cart:
   http://pix.toile-libre.org/upload/original/1514981851.png

[magento-engcom-team]

@breg-13, thank you for your report.
We've created internal ticket(s) MAGETWO-86389 to track progress on the issue.

[ashvinimarwal]

Facing the same issue.
Let me know what is the quick fix for this issue.

[adamlavery]

This issue can be resolved by setting the grouped product Manage Stock = No.

@magento-engcom-team, should grouped products be fixed to manage_stock=no? The grouped product is just a display container. There should never be any stock of the container to manage.

I am having the same issue. When there is 1 assoc product with no stock then it just returns 'please specify quantities of product(s)"

[magento-engcom-team]

Hi @breg-13. Thank you for your report.
The issue has been fixed in magento-engcom/magento2ce#1169 by @p-bystritsky in 2.2-develop branch
Related commit(s):

• 7d4465670326ad09d15985091d40834f6ec040f9
• 42b4f3c7180fa1a56354c4e8466c32fa5882ada0
• da05e921b80ac0766b3965d1e693e7da742abb72
• 40600b9aea44981db11b8094fd9b78ba5a91c904
• 63c7fc9b795d9ad284f546b80f8ae6a0c64b46f6
• 26b6a27ca619468f33165b4481bcc4bce9a56f95

The fix will be available with the upcoming 2.2.8 release.