1814593 - The “Continue to Firefox accounts” URL does not contain the experiment parameters when it is accessed from 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: SingInLink_WrongParameters.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.

[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 “Sign in” button from the top-right corner of the page.
4. Observe the URL’s parameters of the opened link.

[Expected result]:

• The URL contains a specific "utm_term" parameter for the experiment.

[Actual result]:

• The URL doesn’t contain a specific “utm_term” parameter for the experiment.

[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]

This will be resolved with fix of Bug 1814405

Comment 2

[Simona Rosu [:srosu], Ecosystem QA]

I‘ve verified this issue using the latest Firefox Nightly 111.0a1 (Build ID: 20230203091639) on Windows 10 and 11x64.

• I confirm that the "Continue to Firefox accounts" URL contains the “aboutwelcome-optin-window-modal-vs-tab-modal-treatment-a-screen” utm_term after the “Sign in” link from the “Set to default” modal is accessed.
• Based on the Test Plan, the utm_term for treatment B and C still needs to be updated on the recipe.

Comment 3

[Simona Rosu [:srosu], Ecosystem QA]

I‘ve verified this issue using the Firefox Release Candidate 110.0 (Build ID: 20230206190557) on Windows 10 and 11x64.

• I confirm that the Continue to Firefox accounts URL contains the experiment UTM parameters when it is accessed from the window modal.