Amount of characters on a 'Area' Customizable Option counted differently on backend/frontend

[hans-vereyken]

Preconditions (*)

1. Vagrant box, Debian 9
2. Magento 2.2.9
3. Chrome 78
4. Create a virtual product with Customizable Options:

• Option Title: Message
• Option Type: Area
• Max Characters: 20
• Don't forget to add a price and stock

Steps to reproduce (*)

1. Try to put this product in your basket with a message 'Is twenty characters' => OK on front and can add to cart.
2. Try to put this product in your basket with a message with a newline:
   'Is
   twenty
   characters'
   => Ok on front, but error on adding to cart: 'The text is too long.'

Expected result (*)

1. If the Javascript validator validates the input, it should be valid on server-side as well.

Actual result (*)

1. Error shown although the Javascript validator passed.

Summary

The Javascript validator counts newlines as a single character (\n).
On the server side (\Magento\Catalog\Model\Product\Option\Type\maxCharacters) newlines are counted as 2 characters (\r\n).

[m2-assistant]

Hi @hans-vereyken. 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 2.4-develop instance - upcoming 2.4.x release

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

@hans-vereyken 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 @ajijshekh123. Thank you for working on this issue.
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[ajijshekh123]

Give me @magento give me 2.4-develop instance

[magento-engcom-team]

Hi @ajijshekh123. Thank you for your request. I'm working on Magento 2.4-develop instance for you

[magento-engcom-team]

Hi @ajijshekh123, here is your Magento instance.
Admin access: https://i-25974-2-4-develop.instances.magento-community.engineering/admin
Login: admin Password: 123123q
Instance will be terminated in up to 3 hours.

[ajijshekh123]

The issue verified after following the same steps.
See attached the video:

[magento-engcom-team]

✅ Confirmed by @ajijshekh123
Thank you for verifying the issue. Based on the provided information internal tickets MC-29644 were created

Issue Available: @ajijshekh123, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.