1698556 - [Experiment] The "expose" telemetry ping for the "Pin Firefox to Taskbar During Onboarding" experiment experiment is not displayed in the "about:telemetry" page

Status: VERIFIED FIXED

(Firefox :: Messaging System, defect, P1)

Description

[Marius Coman [:mcoman], Ecosystem QA]

Attachment: rec of the issue.gif

[Affected versions]:

• Firefox Beta 87.0b9 - Build ID: 20210311161514

[Affected Platforms]:

• Windows 10 x64

[Prerequisites]:

• Have this user.js saved to your PC.

[Steps to reproduce]:

1. Create a new profile but do not open the browser.
2. Go to the profile folder and paste the "user.js" from prerequisites.
3. Open the browser with the profile from prerequisites using the "--first-startup" argument.
4. Navigate to the "about:telemetry" page.
5. Observe the telemetry pings specific to the experiment in test.

[Expected result]:

• An "expose" ping specific to the "Pin Firefox to Taskbar During Onboarding" experiment is displayed.

[Actual result]:

• There are no "expose" telemetry pings displayed at all.

[Additional Notes]:

• Attached a screen recording of the issue.

@Ed, could you please take a look over this issue?

Comment 1

[Andrei Oprea [:andreio]]

Attachment: Bug 1698556 - Exposure event is not sent when opening about:welcome

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/380765501b82
Exposure event is not sent when opening about:welcome r=k88hudson

Comment 3

[Alexandru Michis [:malexandru]]

https://hg.mozilla.org/mozilla-central/rev/380765501b82

Comment 4

[Marius Coman [:mcoman], Ecosystem QA]

I have verified that this issue is no longer reproducible with the latest Firefox Nightly (88.0a1 Build ID - 20210318093109) installed on Windows 10 x64, Windows 8.1 x64, and Windows 7 x64. Now I can confirm that the "expose" telemetry ping is successfully displayed in the "about:telemetry" page.