"Apply discount to Shipping Amount" disabled for "Fixed amount discount for whole cart" action

[drabikowy]

Preconditions (*)

Reproduced on Magento 2.3-develop;

Steps to reproduce (*)

1. Go to admin panel -> Marketing -> Cart Price Rules -> Add new rule
2. In Actions tab and set Apply to "Fixed amount discount for whole cart"

Expected result (*)

I am able to turn ON "Apply to Shipping Amount" option in action tab.
It should be possible according to documentation (https://docs.magento.com/m2/ce/user_guide/marketing/price-rules-cart-create.html):

Fixed amount discount for whole cart:
Discounts the entire cart by subtracting a fixed amount from the cart total. For example: Enter 10 in Discount Amount to subtract $10 from the cart total.By default, the discount applies only to the cart subtotal. To apply the discount to the subtotal and shipping separately, see Apply to Shipping Amount.

Actual result (*)

"Apply to Shipping Amount" switcher Is disabled

[m2-assistant]

Hi @drabikowy. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento give me 2.3-develop instance - upcoming 2.3.x release

For more details, please, review the Magento Contributor Assistant documentation.

@drabikowy do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

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[m2-assistant]

Hi @engcom-Bravo. Thank you for working on this issue.
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[magento-engcom-team]

✅ Confirmed by @engcom-Bravo
Thank you for verifying the issue. Based on the provided information internal tickets MC-19818 were created

Issue Available: @engcom-Bravo, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.

[m2-assistant]

Hi @sudheers-kensium. Thank you for working on this issue.
Looks like this issue is already verified and confirmed. But if you want to validate it one more time, please, go though the following instruction:

• 1. Add/Edit Component: XXXXX label(s) to the ticket, indicating the components it may be related to.

• 2. Verify that the issue is reproducible on 2.3-develop branch

  Details

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[sudheers-kensium]

@magento give me 2.3-develop instance

[magento-engcom-team]

Hi @sudheers-kensium. Thank you for your request. I'm working on Magento 2.3-develop instance for you

[magento-engcom-team]

Hi @sudheers-kensium, here is your Magento instance.
Admin access: https://i-24422-2-3-develop.instances.magento-community.engineering/admin
Login: admin Password: 123123q
Instance will be terminated in up to 3 hours.