1768608 - [Rollout] New Firefox profiles are wrongly enrolled in the "TCP rollout, Phase III (Switch on by default for 25% EXISTING Release profiles)" rollout

Status: RESOLVED WONTFIX

(Firefox :: Messaging System, defect)

Description

[Marius Coman [:mcoman], Ecosystem QA]

Attachment: rec of the issue.gif

[Affected versions]:

• Firefox Beta 101.0b4 - Build ID: 20220508185621

[Affected Platforms]:

• Windows 10 x64
• macOS 11.6.2
• Linux Mint 20.2 x64

[Prerequisites]:

• Have the update channel set to "release".
• Have the "user.js" file saved to your PC.

[Steps to reproduce]:

1. Create a new Firefox profile but do not open it.
2. Navigate to the previously created profile folder and paste the "user.js" from the prerequisites.
3. Open the browser using the previously created profile and the --first-startup flag.
4. Navigate to the "about:studies" page and observe the displayed studies.

[Expected result]:

• The "TCP rollout, Phase III (Switch on by default for 25% EXISTING Release profiles)" study is NOT displayed.

[Actual result]:

• The "TCP rollout, Phase III (Switch on by default for 25% EXISTING Release profiles)" study is displayed on the "about:studies" page.

[Additional Notes]:

• This issue could be easily fixed by changing the rollout's targeting expression.
• Attached a screen recording of the issue.

Comment 1

[Ed Lee :Mardak]

Enrolling new users with Phase 3 is acceptable as Phase 2 will still be active attempting to enroll 100% new users, so if new users happen to get included in Phase 3 as well, that's fine.