1690519 - [Experiment] The "Set as Default" notification is wrongly triggered on other pages besides the "about:newtab" one

Status: VERIFIED FIXED

(Firefox :: Messaging System, defect)

Description

[Marius Coman [:mcoman], Ecosystem QA]

Attachment: rec of the issue3.gif

[Affected versions]:

• Firefox Nightly 87.0a1 - Build ID: 20210202214809

[Affected Platforms]:

• Windows 10 x64
• Mac 10.15
• Linux Mint 20

[Prerequisites]:

• The browser is not set as default
• 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. Navigate to the "about:preferences#general" and check the "Restore previous session" option.
4. Navigate to any website and restart the browser.
5. Observe the behavior.

[Expected result]:

• The website opened at step 4 is successfully displayed.

[Actual result]:

• The "Set as Default" notification is also displayed in the top part of the page.

[Additional Notes]:

• This issue is not reproducible with the existing "Set as Default" feature notification.
• Attached a screen recording of the issue.

Comment 1

[Andrei Oprea [:andreio]]

Issue was around experiment targeting which has been updated.

Comment 2

[Marius Coman [:mcoman], Ecosystem QA]

I have verified that this issue is no longer reproducible with the latest Firefox Beta (86.0b7 Build ID - 20210207185447) and the latest Firefox Nightly (87.0a1 Build ID - 20210209092956) installed on Windows 10 x64, macOS 10.15.7, and Linux Mint 20 x64. Now, I can confirm that the "Set as Default" infobar is triggered only on the "about:newtab" page.