Block preview in page builder broken for blocks that do not belong in the default strore.

[TheBadong]

Preconditions and environment

Magento ver. 2.4.3-p2

Steps to reproduce

1. Have a magento instance with at least two stores
2. Create a cms block only visible in the store that is not the default store
3. Create a cms page in on of the two stores (doesn't matter which one)
4. Add the cms block you created, in the page through the page builder.

Expected result

Block preview should render

Actual result

No block preview is rendered

Additional information

From my research, i found that the code goes through this file vendor/magento/module-cms/Block/Widget/Block.php(131) and gets sets the default store id on the block it's trying to fetch. It then tries to look for the block from the other store with the wrong store id, and does not find it here vendor/magento/module-cms/Model/ResourceModel/Block.php(121). The block is not loaded and the preview is blank.

Note that only the preview in the page builder is broken, the page renders correctly on the frontend.

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.
• 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 @TheBadong. Thank you for your report.
To speed up processing of this issue, make sure that you provided the following information:

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• Information on your environment
• Steps to reproduce
• Expected and actual results

Make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, Add a comment to the issue:

@magento give me 2.4-develop instance - upcoming 2.4.x release

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[TheBadong]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @TheBadong. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @TheBadong, here is your Magento Instance: https://fde56b008b77c88efc9ac1348a092fde.instances.magento-community.engineering
Admin access: https://fde56b008b77c88efc9ac1348a092fde.instances.magento-community.engineering/admin_7ba5
Login: a3a7275d
Password: 2e76b7ced467

[TheBadong]

Just tested and reproduced on this instance

[m2-assistant]

Hi @engcom-November. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

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[engcom-November]

@magento give me 2.4-develop instance

[magento-deployment-service]

Hi @engcom-November. Thank you for your request. I'm working on Magento instance for you.

[magento-deployment-service]

Hi @engcom-November, here is your Magento Instance: https://fde56b008b77c88efc9ac1348a092fde.instances.magento-community.engineering
Admin access: https://fde56b008b77c88efc9ac1348a092fde.instances.magento-community.engineering/admin_8f39
Login: 8a5519f9
Password: 843138d415f4

[engcom-November]

Verified the issue on Magento 2.4-develop instance and is reproducible. Hence confirming this issue.