Customer group code saved does not match the input when using multibyte characters

[oskar-olaussen]

Preconditions and environment

• Magento version: tested on 2.4.7-p3.
• Copypasteble 31 "ö" characters for convenience: ööööööööööööööööööööööööööööööö

Steps to reproduce

1. In admin go to Customer->Customer Groups.
2. Click "Add New Customer Group"
3. Input 31 "ö" characters as the group name:
4. Click "Save Customer Group".

Expected result

A customer group with code "ööööööööööööööööööööööööööööööö" is created.

Actual result

A customer group with code "öööööööööööööööö" (16 characters) is created.

Additional information

The issue is most likely in these two places: https://github.com/magento/magento2/blob/6acfd6aa744c905f7694f2cddd5b0add5bf202b7/app/code/Magento/Customer/Model/Group.php#L175 and https://github.com/magento/magento2/blob/6acfd6aa744c905f7694f2cddd5b0add5bf202b7/app/code/Magento/Customer/Model/ResourceModel/Group.php#L127 .

There we are using the substr function instead of mb_substr. I see no issue with using mb_substr as the database can handle 32 multibyte characters fine.

Release note

No response

Triage and priority

• [ ] Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• [ ] Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• [X] Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• [ ] Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• [ ] Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant[bot]]

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[m2-assistant[bot]]

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[engcom-Bravo]

Hi @oskar-olaussen,

Thanks for your reporting and collaboration.

We have verified the issue in Latest 2.4-develop instance and the issue is reproducible.Kindly refer the screenshots.

A customer group with code "öööööööööööööööö" (16 characters) is created.

Hence Confirming the issue.

Thanks.

[github-jira-sync-bot]

:white_check_mark: Jira issue https://jira.corp.adobe.com/browse/AC-13335 is successfully created for this GitHub issue.

[m2-assistant[bot]]

:white_check_mark: Confirmed by @engcom-Bravo. Thank you for verifying the issue.
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.