Catalog price is not being updated after changes of customer group from admin

If I am logged in the front area and my

customer group is :-  [general]

After that, I create a new customer group [vendor] and create new catalog price rule for vendor type customer and assign 10% discount to vendor group customer.

Now if I change my customer group from admin
general to vendor then I am unable to find 10% discount on product price.

I did this action to find the effect:- flush/indexer/clear but there was not any update.

Note :- I got updated price if I re-log in with the customer.

Preconditions

1. Magento 2
2. Product created.
3. Customer with "General" group registered.
4. Catalog Price Rule for "Wholesale" customer group created and applied.

Steps to reproduce

1. Login as Customer.
2. Open Product page - make sure Catalog Price Rule is not applied.
3. Change Customer's group to "Wholesale".
4. Open Product page once again.

Expected result

1. Catalog Price Rule is applied.

Actual result

1. Catalog Price Rule is not applied.

[magento-engcom-team]

Hi @manishg0. 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-engcom-team give me {$VERSION} instance

where {$VERSION} is version tags (starting from 2.2.0+) or develop branches (2.2-develop +).
For more details, please, review the Magento Contributor Assistant documentation.

@manishg0 do you confirm that you was able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

@manishg0, thank you for your report.
We've acknowledged the issue and added to our backlog.