1925774 - Browser does not start after choosing different profile from -p

Status: RESOLVED FIXED

(Toolkit :: Startup and Profile System, defect)

Description

[Alice0775 White]

To start with a different profile, the startup operation must be repeated twice with that profile.

Steps to reproduce:

1. Prepare two different profile called profile-A and profile-B. And let profile-A be the last used profile.
2. Start profile chooser. i.e., firefox.exe -p
3. Choose profile-A (that is pre-selected) then press [Start Nightly] button
4. Quit the browser
5. Start profile chooser again. i.e., firefox.exe -p
6. Choose profile-B then press [Start Nightly] button

Actual Results:
Browser does not start. (Silently fail).
To start the browser, you must repeat step 5 again.

Expected results:
Browser should start with the chosen profile

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=b9985db52a3577c35467ba72765bd9cd919d6802&tochange=d04c781d28a45fcac3298539e5b6ac026c388e55

Interestingly, the debug builds do not seem to have this problem.

Comment 1

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

:mossop, since you are the author of the regressor, bug 1915216, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Comment 3

[Mayank Bansal]

Alice: curious how did you bisect this? I use the mozregression-gui on windows, and i couldn't figure it out.

Comment 4

[Alice0775 White]

(In reply to Mayank Bansal from comment #3)

Alice: curious how did you bisect this? I use the mozregression-gui on windows, and i couldn't figure it out.

I did manual bisection.
(Download opt builds(B or Bs) from https://treeherder.mozilla.org/jobs?repo=autoland&searchStr=windows%252C2012%252Cx64 )

Comment 5

[Dave Townsend [:mossop]]

Alice, what operating system are you testing with?

Comment 6

[Alice0775 White]

(In reply to Dave Townsend [:mossop] from comment #5)

Alice, what operating system are you testing with?

I can reproduce the issue on Windows11 and ubuntu24.04. (I do not have Mac)

Comment 7

[Bianca Hidecuti, Desktop Test Engineering [:bhidecuti]]

Hello,
I am also able to reproduce this issue on Firefox Nightly 133.0a1 (2024-10-20), using macOS 14.7.

Comment 8

[Dave Townsend [:mossop]]

Attachment: Bug 1925774: Browser does not start after choosing different profile from -p. r=jhirsch!

We must delay closing the profile selection UI until after the asynchronous flush completes.

Comment 9

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/18c1ef95c7f2
Browser does not start after choosing different profile from -p. r=jhirsch

Comment 10

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/18c1ef95c7f2