1814404 - The “Choose Your Language” modal is not displayed in the treatment branches of the "Test Window modal vs Tab modal on about:welcome" experiment

Status: VERIFIED FIXED

(Firefox :: Messaging System, defect, P1)

Description

[Simona Rosu [:srosu], Ecosystem QA]

Attachment: OnboardingFlow_exp_NoChooseLanguage.gif

[Affected versions]:

• Firefox Beta 110.0b8 (Build ID: 20230131190033)

[Affected Platforms]:

• Windows 10 x64
• Windows 11 x64

[Prerequisites]:

• Have the latest version of Firefox Beta 110 installed and opened.
• Have the “nimbus.debug” and “devtools.chrome.enabled” prefs set to “true” in the “about:config” page.
• Have set a different OS language than the browser's one.

[Steps to reproduce]:

1. Force enroll in the Treatment C branch of the experiment using the following link: about:studies?optin_slug=window-modal-vs-tab-modal&optin_branch=treatment-c&optin_collection=nimbus-preview
2. Focus the browser console and run the “Cc["@mozilla.org/browser/clh;1"].getService().wrappedJSObject.firstRunProfile = true; Cc["@mozilla.org/browser/browserglue;1"].getService().wrappedJSObject._maybeShowDefaultBrowserPrompt()” syntax.
3. Click the “Skip this step” button from the first modal.
4. Observe the next modal displayed.

[Expected result]:

• The “Choose Your Language” modal is displayed.

[Actual result]:

• The “Import Data” modal is displayed.

[Notes]:

• This issue is also reproducible in the Treatment A and B branches of the experiment.
• This issue is not reproducible on the Control branch of the experiment.
• Attached is a screen recording of the issue.

Comment 1

[Mimi Jung]

Hi Simona,

We found that similar to the pin screen bug, the window modal (treatment branches) does not support language mismatch configuration. As a result, we will be removing that screen for both the treatment and control groups. Could you please verify that they no longer render in either treatment and control groups?

Thanks!

Comment 2

[Simona Rosu [:srosu], Ecosystem QA]

Hi, Negin! I've retested this issue using Firefox Beta 110.0b8 - Build ID: 20230131190033, on Windows 10 and 11 x64.

• I confirm that the "Choose Your Language" modal is no longer displayed in either branch of the experiment.

Comment 3

[Simona Rosu [:srosu], Ecosystem QA]

Based on comment 2, I'm marking this issue as Verified.