JS Minification issue & requirejs loading in production mode in 2.4.7

[KrzysztofWisniewskiAcc]

Preconditions and environment

1. Magento community/commerce version: 2.4.7
2. Firefox browser (I was able to reproduce this on other browsers, but in firefox, the issue occurs almost all the time)

Steps to reproduce

1. Install fresh Magento version of 2.4.7
2. Enable js minification (there are few ways to do it, I edit the config.php/env.php file)
   ...

'system' => [
        'default' => [
            'dev' => [
                'template' => [
                    'minify_html' => '1'
                ],
                'js' => [
                    'merge_files' => '0',
                    'minify_files' => '1',
                    'enable_js_bundling' => '0'
                ],
                'css' => [
                    'minify_files' => '1'
                ],
                'grid' => [
                    'async_indexing' => '1'
                ]
            ],
        ]
    ]

3. Run:

bin/magento setup:upgrade
bin/magento deploy:mode:set production

4. Now go to front and open the console, errors should be there
5. If errors are not there refresh the page few times,

Best is to use Firefox, as the errors there appear almost always.
The errors appear rarely in other browsers.

The first error:
The resource from “http://magento.clean/static/version1718361386/frontend/Magento/luma/en_US/mage/common.js” was blocked due to MIME type (“text/html”) mismatch (X-Content-Type-Options: nosniff).

These errors do not occur on magento 2.4.5

I did not test this on magento 2.4.6 so it may be that the issue also occurs there.

Expected result

There are no errors in console.
The files are not loaded twice.
Only minified files are loaded.

Actual result

There are errors in console.
Files are loaded twice
.min files & their corresponding 'not minified' are being requested (which fails to load as not minified files, don't exists in pub directory after setup:static-content:deploy) .

Additional information

I noticed the issue when upgrading from 2.4.4-p8 to 2.4.7 so not quite sure if this started to happen with 2.4.7 release or 2.4.6

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 @KrzysztofWisniewskiAcc. Thank you for your report.
To speed up processing of this issue, 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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[m2-assistant]

Hi @engcom-Delta. 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: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).
• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue.
• 3. Add Area: XXXXX label to the ticket, indicating the functional areas it may be related to.
• 4. Verify that the issue is reproducible on 2.4-develop branch
  Details

  - Add the comment @magento give me 2.4-develop instance to deploy test instance on Magento infrastructure.
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[engcom-Delta]

Hi @KrzysztofWisniewskiAcc ,

Verified the issue on 2.4.7 community and commerce edition and we are not able to reproduce this issue.

Steps to reproduce:-

1.Enable js minification
2.Run bin/magento setup:upgrade
bin/magento deploy:mode:set production
3.Go to front and open the console, check errors
4.Refresh the page few times

For magento community

For magento commerce

Please refer the attached screenshots and let us know if we missed anything.

[KrzysztofWisniewskiAcc]

Hi @KrzysztofWisniewskiAcc ,

Verified the issue on 2.4.7 community and commerce edition and we are not able to reproduce this issue.

Steps to reproduce:-

1.Enable js minification 2.Run bin/magento setup:upgrade bin/magento deploy:mode:set production 3.Go to front and open the console, check errors 4.Refresh the page few times

For magento community

...

I was able to reproduce the issue in the way you described.
When I checked 'disable cache' in firefox, after few refreshes I was able to reproduce it.
It was more rare to encounter the issue if 'disable cache' was not checked.

[engcom-Delta]

Hi @KrzysztofWisniewskiAcc ,

We Verified the issue on 2.4.7 and 2.4-develop again and we are not able to reproduce this.

Steps to reproduce:-

1.Enable js minification
2.Run bin/magento setup:upgrade
bin/magento deploy:mode:set production
3.Go to front and open the console, check errors
4.Disable cache
5.Refresh the page few times

For 2.4.7

For 2.4-develop

[engcom-Bravo]

Hi @KrzysztofWisniewskiAcc,

We have noticed that this issue has not been updated since long time.
Hence we assume that this issue is fixed now, so we are closing it. Please feel to raise a fresh ticket or reopen this ticket if you need more assistance on this.

Thanks.

[KarolLitman]

We are experiencing the same issues after upgrading from version 2.4.6 to 2.4.7-p1. @KrzysztofWisniewskiAcc, have you managed to resolve this problem?

[vandijkstef]

I have the same issue; and also have the same problem creating a 100% reproducible case. Not sure how exactly; But I think this is happening when caches are expired and/or recompiling on that specific request - possibly enforced by the Cache-Control: no-cache & Pragma: no-cache request headers, with a flair of race-conditions?

Sorry I have nothing decent to add to re-open this ticket.

[tstamplis]

Did anyone find a solution? I have the same problem with 2.4.7-p1 but on mobile view only. In desktop, only minified js files are loaded by the browser. But in mobile view, it tries to load both minified and unminified js files in production mode with minify js turned on.