[BUG] [Firefox] Protocol error is thrown when interacting with iframe elements

[AntonStriga]

Context:

• Playwright Version: 1.27.1
• Operating System: Windows 10
• Node.js version: v16.16.0
• Browser: Firefox
• Extra: [any specific details about your environment]

Describe the bug

1. There is page with iframe.
2. Frame is detected by frameLocator: this.frameLocator = page.frameLocator('.module-frame')
3. Test interacts with elements of the frame
4. On the step with file downloading (by clicking on button) Print preview modal appears
5. Interaction with page elements inside iframe is crashed

Error: locator.click: Protocol error (Page.describeNode): error in channel "content::11/12/5": exception while running method "describeNode" in namespace "page": Component returned failure code: 0x80040111 (NS_ERROR_NOT_AVAILABLE) [nsIDocShell.domWindow] domWindow@chrome://juggler/content/content/FrameTree.js:573:5 _describeNode@chrome://juggler/content/content/PageAgent.js:442:30 _onMessage@chrome://juggler/content/SimpleChannel.js:194:37 bindToActor/actor.receiveMessage@chrome://juggler/content/SimpleChannel.js:53:44 _onMessage@chrome://juggler/content/SimpleChannel.js:178:24 bindToActor/actor.receiveMessage@chrome://juggler/content/SimpleChannel.js:53:44

at ConfirmationButtons.cancel (file:///e:/WORK/repository/nsms_tests/e2e/src/appUI/commonElements/modalButtons.ts:48:30) at CustomDownloadDialog.cancel (file:///e:/WORK/repository/nsms_tests/e2e/src/appUI/commonElements/dialogs.ts:42:28) at Clients.createDstByDetailsDropDown (file:///e:/WORK/repository/nsms_tests/e2e/src/appUI/nsms/clients/clients.ts:225:9) at file:///e:/WORK/repository/nsms_tests/e2e/src/tests/role-model/vpn/test.spec.ts:32:9

Execution log waiting for frame ".module-frame" selector resolved to visible <iframe _ngcontent-ckx-c345="" class="module-frame ng-st…>

Note In chromium browser this problem is absent. Tests work correctly.

[pavelfeldman]

Could you share an example we can use to reproduce this problem?

[AntonStriga]

You can reproduce bug using the following files: html_frame.zip

import { test } from '@playwright/test'
test("test iframe", async ({page}) => {
    await page.goto("http://127.0.0.1:8080")
    const frame = page.frameLocator('#ind_frame')
    const input = frame.locator('#input')
    const button = frame.locator('#button')

    await input.fill("test text")
    await button.click()
    await input.fill("after using print button")
        
    await page.waitForTimeout(5000)
})

Note: I've tried downgrade playwright version: on 1.26.1 Bug is not reproduce

[mxschmitt]

I can repro.

[niyarlatotep]

Faced the same issue.

[niyarlatotep]

@dgozman Why is this tagged as collecting-feedback isn't it a bug? It worked well in old versions e. g. 1.26.1.

[dgozman]

@dgozman Why is this tagged as collecting-feedback isn't it a bug? It worked well in old versions e. g. 1.26.1.

This involves print preview, which is not the top priority for Playwright project. I haven't noticed this is a regression from 1.26.1 though, let me take a closer look.

[niyarlatotep]

Any chance to get it fixed?

[AntonStriga]

This involves print preview, which is not the top priority for Playwright project

We don't need to interact with print preview itself. But after it appears it breaks iframe locators and all interactions with elements inside iframe are impossible.

[unlimdwl]

I faced same issue. I need solution . Did anyone solved this issue ? I’m ready to pay for the solution

[pavelfeldman]

Why was this issue closed?

Thank you for your contribution to our project. This issue has been closed due to its limited upvotes and recent activity, and insufficient feedback for us to effectively act upon. Our priority is to focus on bugs that reflect higher user engagement and have actionable feedback, to ensure our bug database stays manageable.

Should you feel this closure was in error, please create a new issue and reference this one. We're open to revisiting it given increased support or additional clarity. Your understanding and cooperation are greatly appreciated.