1908926 - [Experiment] The Embedded Import Spotlight is wrongly displayed at browser first-startup

Status: VERIFIED FIXED

(Firefox :: Messaging System, defect, P1)

Description

[Alexandru Bejenaru [:abejenaru], Ecosystem QA]

Attachment: Video of the issue.mp4

[Affected versions]:

• Firefox Release 126.0, BUILD ID: 20240509170740.
• Firefox Release 127.0, BUILD ID: 20240606181944.
• Firefox Release 128.0, BUILD ID:20240704121409.

[Affected Platforms]:

• Windows 10 x64.
• Windows 11 x64.

[Prerequisites]:

• Have the user.js file downloaded on your computer.
• Create a new Firefox profile using the --first-startup flag but don’t open it.

[Steps to reproduce]:

1. Navigate to the profile folder and paste the user.js from prerequisites.
2. Launch the browser using the profile from the prerequisites.
3. Observe the behavior.

[Expected result]:

• The “Embedded Import” spotlight is not displayed at first-startup.

[Actual result]:

• The “Embedded Import” spotlight is displayed.

[Notes]:

• This issue is reproducible with both Existing and Early Day Users experiments.

Comment 1

[Jason Prickett]

This was addressed with profileRestartCount > 0 in the experiment targeting. We concluded that it would be exceedingly unlikely for a user to see about:welcome after having restarted their browser at least once before, and accepted the risk as minor.

Comment 2

[Alexandru Bejenaru [:abejenaru], Ecosystem QA]

Hello. We were unable to reproduce this issue anymore using Firefox Release 131.0.3 (Build ID: 20241011205646), Firefox Release 128.0 (Build ID: 20240704121409), on Windows 10. Since the targeting of the experiment has changed to profileRestartCount > 0, it is now not possible to encounter this issue anymore regardless of the "--first-startup" flag being used or not. As a result I'm closing this as Verified Fixed, thanks!