1963580 - [Experiment] The seasonal spring WNP uses the control fallback image on both experiment branches

Status: VERIFIED FIXED

(Firefox :: Messaging System, defect, P1)

Description

[Patriciu Pop [:ppop], Ecosystem QA]

Attachment: wnp.png

[Affected versions]:

• Firefox Release 138.0 (Build ID: 20250421163656)

[Affected Platforms]:

• Windows 11 x64
• Ubuntu 22.04 x64
• macOS 15.2

[Prerequisites]:

• Have the Fx 137 build installed.
• Have the profile enrolled in the treatment-a branch of the WNP Seasonal - Spring experiment

[Steps to reproduce]:

1. Open the browser with the profile from the prerequisites.
2. Update to the latest version (Fx 138) and observe the what's new page.

[Expected result]:

• The spring seasonal firefox image is displayed above the QR code.

[Actual result]:

• The control fallback firefox image is displayed instead.

[Notes]:

• While the treatment URL is correct (https://www.mozilla.org/fa/firefox/138.0/whatsnew/?branch=wnp-seasonal-spring&variant=v2&newversion=138.0&oldversion=137.0.2&utm_medium=firefox-desktop&utm_source=update&utm_campaign=spring-whats-new-page) the wrong image is displayed.
• Attached a screenshot of the issue:

Comment 1

[Hanna Alemu [:hanna_a]]

Thanks for filing this @Patriciu. This is expected since the new What's new page hasn't been pushed to production. Will close this bug once it is.

Comment 2

[Hanna Alemu [:hanna_a]]

Hi @Patriciu, the page is live now. Could you confirm that it's been fixed? Thanks!

Comment 3

[Patriciu Pop [:ppop], Ecosystem QA]

I've verified that the issue is no longer reproducible, the new Spring WNP image is displayed on the treatment-a branch. Tested using Firefox 138.0.1 (20250430203103) on Windows 10 x64.