Static CMS image urls when using a different (sub)domain for custom admin url

[elouwerse]

Preconditions (*)

1. Magento 2.4.2

Steps to reproduce (*)

1. Admin panel » Stores » Configuration » General » Content Management » Use Static URLs for Media Content in WYSIWYG: No
2. Admin panel » Stores » Configuration » Advanced » Admin » Admin Base URL » Use Custom Admin URL: Yes
3. Set admin to a different (sub)domain than the actual store url.
4. Add/edit a CMS page, static block or product page
5. Add image

Expected result (*)

1. Media tag with relative image url
2. <img src="{{media url="wysiwyg/test-image.png"}}" alt="">

Actual result (*)

1. Media tag with static Magento admin url instead of store url
2. <img src="{{media url="https://dev.magentotest.local/wysiwyg/test-image.png"}}" alt="">

This issue is caused by inconsistend use of $this->_storeManager->getStore() in /vendor/magento/module-cms/Helper/Wysiwyg/Images.php
Line 214: $this->_storeManager->getStore()
Line 299: $this->_storeManager->getStore($this->_storeId)

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Please provide Severity assessment for the Issue as Reporter. This information will help during Confirmation and Issue triage processes.

• 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.
• 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]

Hi @elouwerse. 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
• Expected and actual results

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[magento-engcom-team]

@Den4ik Thank you for verifying the issue.

Unfortunately, not enough information was provided to acknowledge ticket. Please consider adding the following:

• Add "Reproduced on " label(s) to this ticket based on verification result

Once all required information is added, please add label "Issue: Confirmed" again.
Thanks!

[magento-engcom-team]

✅ Confirmed by @Den4ik
Thank you for verifying the issue. Based on the provided information internal tickets MC-42160 were created

Issue Available: @Den4ik, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.