Swatch not updating to show out of stock and are able to click [2.2.1]

[dawhoo]

Preconditions

1. Magento 2.2.1 Production
2. PHP 7.0.23
3. SQL Server version: 5.6.36-82.0 - Percona Server (GPL), Release 82.0, Revision 58e846a

Steps to reproduce

1. Configurable Product with 2 sub attributes (Color(Red,Green), Size(S,M,L)
2. Set Inventory as 1 for each child
3. Add Red,M product to cart and checkout
4. Process the order so the item inventory is updated to "0"
5. Verify item inventory is 0 and make sure backorders are not allowed.

Expected result

1. The Red,M swatch should have the red slash.
2. The Red,M swatch should not be able to be selected

Actual result

1. The Red,M swatch does not have the red slash.
2. The Red,M swatch is able to be selected.
3. When you clock "Add to Cart" error displays on product page "You need to choose options for your item."

Magento 2.1.9 updated to 2.2.1 - The problem did not occur in 2.1.9, but it is present in 2.2.1

Products that were out of stock in 2.1.9 had the red slash and your couldn't select that option. After the upgrade, all existing combinations are able to be selected despite being out of stock.

In cataloginventory_stock_status, the items are showing stock_status 0 for items sold in 2.1.9 and 2.2.1
In cataloginventory_stock_status_idx the items are showing stock_status 1 for items sold after upgrading to 2.2.1, and stock status as 0 for items sold in 2.1.9

[magento-engcom-team]

@dawhoo, thank you for your report.
We've created internal ticket(s) MAGETWO-84694 to track progress on the issue.

[sennin32]

Not only Swatch.
I'm facing the same issue for simple item and configurable items.
Worst of all, some configurable items is not show even the stock quantity is positive, in stock, and enabled.

[santhoshp]

I am working on it. #mm18in