[Bug]: Application fails to load in Safari (Docker Environment)

[romankhomitskyi]

Version

1.49.0

Steps to reproduce

The application does not load in Safari when run inside a Docker container. A console error is shown, and the page fails to render.

1. docker pull mcr.microsoft.com/playwright:v1.49.0
2. Create test

import { expect, test } from '@playwright/test';

test('Should visit the page', async ({ page }) => {
	await page.goto('https://app.tenantcloud.com/login');
	await expect(page.locator('[formcontrolname="email"]')).toBeVisible();
});

3. Run the test inside container in Safari browser
   docker run -it --rm --ipc=host mcr.microsoft.com/playwright:v1.49.0 /bin/bash

Expected behavior

The application should load in Safari inside the docker container, everything works in Safari outside the container

Actual behavior

Console error is snown, which might be the cause of not loading the application, however, there is no error in Safari outside the container

'text/plain' is not a valid JavaScript MIME type.
TypeError: 'text/plain' is not a valid JavaScript MIME type.

Additional context

Environment

System:
    OS: macOS 15.2
    CPU: (10) arm64 Apple M1 Max
    Memory: 297.30 MB / 32.00 GB
  Binaries:
    Node: 20.15.1 - ~/.nvm/versions/node/v20.15.1/bin/node
    Yarn: 1.22.22 - ~/.nvm/versions/node/v20.15.1/bin/yarn
    npm: 10.7.0 - ~/.nvm/versions/node/v20.15.1/bin/npm
  IDEs:
    VSCode: 1.94.2 - /usr/local/bin/code
  Languages:
    Bash: 5.2.15 - /opt/homebrew/bin/bash
  npmPackages:
    @playwright/test: 1.49.0 => 1.49.0

[mxschmitt]

I can repro but was so far not able to get a minimal reproducible out of it. It seems like if you load a zero-size .js file in a module it fails in WebKit on Linux but not on other platforms/Chrome.

[romankhomitskyi]

I can repro but was so far not able to get a minimal reproducible out of it. It seems like if you load a zero-size .js file in a module it fails in WebKit on Linux but not on other platforms/Chrome.

Can you tell me which specific file?

I'll also add that the tests pass in this image on the same site on Pipelines, but there the servers have an AMD architecture.

[mxschmitt]

Its https://cdn.tenantcloud.net/builds/v60.0.117/web/main.js requiring https://cdn.tenantcloud.net/builds/v60.0.117/web/chunk-QX3US56N.js

[mxschmitt]

I was able to create a minimal reproducible out of it - filed upstream as https://bugs.webkit.org/show_bug.cgi?id=286734

[fonzi]

I'm getting the same behavior on 1.50. Assuming it's the same thing. Also inside docker only.