Specific prices for customer groups

[Max84]

Prerequisites

• I understand and accept the project's code of conduct.
• I have already searched in existing issues and found no previous report of this bug.

Describe the bug and add attachments

Specific prices are applied only to default group and not to another group.

I think it's a new feature, but I posted it as bug due to the very old report DOC-99 (August 2015) see attachment.
DOC-99.pdf

Expected behavior

Specific prices could be applied if a customer is into a group which is not his default group.

Steps to reproduce

1. Create a group called "A"
2. Create a customer and set "A" as group. Don't change default group.
3. Create specifc prices to "A" group
4. Display the product on frontoffice logged as this customer, you won't see the "A" group price.

PrestaShop version(s) where the bug happened

8.1

PHP version(s) where the bug happened

N/A

If your bug is related to a module, specify its name and its version

No response

Your company or customer's name goes here (if applicable).

No response

[Max84]

If the Presta team agree this is a bug or a good new feature, I'll purpose a PR because this feature will be useful for us

[paulnoelcholot]

@RosaBenouamer What did you think about that?

[RosaBenouamer]

@MatShir :-)