Can't change customer group when placing an admin order

[gaurav-473]

When ordering in the admin, we can't change the customer group when creating a new customer while creating an order.

Preconditions

1. Magento 2.3
2. Several Customer Groups created

Steps to reproduce

1. In admin select Sales->Orders.
2. Select Create New Order
3. Select Create New Customer
4. Under Account Information, change the group.

Expected result

1. Selected customer group stays selected in select box.
2. Product prices are updated for the group.

Actual result

1. Wait overlay comes up, twice.
2. Customer group goes back to the default.
3. Email input box to the right is cleared.
4. Product prices stay the same.

Note: this issue is similiar to #7974 and #6162

[magento-engcom-team]

Hi @gauravagarwal1001. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

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• Information on your environment
• Steps to reproduce
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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-engcom-team give me 2.3-develop instance - upcoming 2.3.x release

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

@gauravagarwal1001 do you confirm that you was able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

[magento-engcom-team]

Hi @shikhamis11. Thank you for working on this issue.
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[shikhamis11]

@magento-engcom-team give me 2.3-develop instance

[magento-engcom-team]

Hi @shikhamis11. Thank you for your request. I'm working on Magento 2.3-develop instance for you

[magento-engcom-team]

Hi @shikhamis11, here is your Magento instance.
Admin access: https://i-21144-2-3-develop.instances.magento-community.engineering/admin
Login: admin Password: 123123q
Instance will be terminated in up to 3 hours.

[magento-engcom-team]

✅ Confirmed by @shikhamis11
Thank you for verifying the issue. Based on the provided information internal tickets MAGETWO-98214, MAGETWO-98215 were created

Issue Available: @shikhamis11, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.