1706291 - Firefox top part is not loaded for a couple of seconds after setting default profile from profile manager

Status: RESOLVED DUPLICATE of bug 1685572

(Toolkit :: Startup and Profile System, defect)

Description

[Alexandru Trif, Desktop Test Engineering [:atrif]]

Affected versions

• 90.0a1 (20210419221626)
• 89.0b1 (20210419195043)

Affected platforms

• Windows 10x64

Steps to reproduce

1. Open Firefox with default profile without profile manager.
2. Close and reopen or restart Firefox.
3. Observe the top part of the browser.

Expected result

• The browser is displayed as expected.

Actual result

• Some lines can be seen when Firefox is opened.

Regression range

• I’ve made a manual regression range check. On good build, this issue can be seen only one time and on bad happens all the time:
  Last good: bcfbf7c9d10876c3e47a3cf44d6540b6e584ccf3
  First bad: 855ec176a3c2239fe2f166431c96ee7710204b30
  Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=bcfbf7c9d10876c3e47a3cf44d6540b6e584ccf3&tochange=855ec176a3c2239fe2f166431c96ee7710204b30

Notes

• Attached a screen recording while firefox is opened with profile manager and without: link
• We reproduced the issue on two of three Windows 10x64 machines.
• This happens with proton enabled and disabled as well.
• Also I can reproduce the issue with 87.0a1 and 88.0a1 but with 88.0RC only one time and not with 87.0RC.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Toolkit::Startup and Profile System' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Dave Townsend [:mossop]]

This is the intentional effect of bug 1680258 I believe.

Comment 3

[Alex Thayer [:alexical] (she/her)]

Yes, that is correct. Resolving as a duplicate of 1685572 which tracks supporting multiple profiles for the skeleton UI.