Affected versions

• Fx 67.0b8
• Fx 68.0a1

Affected platforms

• Windows 10 x64

Steps to reproduce

1. Go to the folder where the build is installed and open the commander.
2. Type: "firefox.exe -p".
3. Check/Uncheck the "Use the selected profile without asking at startup"
4. Close the Profile Manager.
5. Type again in the commander the following string: "firefox.exe -p".

Expected result

• Profile Manager remembers the user choice.

Actual result

• Profile Manager does not remember the user choice.

Regression range

• First bad: 28-03-2019
• Last good: 27-03-2019
• Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=c045dd97faf291904e060d8889391497d92b8353&tochange=d2c82f845bfcf1ebd75e3a8aa932f17c3ac9ded8
• Potential regressor: https://bugzil.la/1527704

Additional notes

• Fx 67.0b7 is not affected.

Tracking as this is a new regression in beta.

Beta 8 uplifts:
https://hg.mozilla.org/releases/mozilla-beta/pushloghtml?fromchange=FIREFOX_67_0b7_RELEASE&tochange=FIREFOX_67_0b8_RELEASE

https://hg.mozilla.org/mozilla-central/rev/707da9fd9d95

I'd like to see it verified on nightly.
Dave could you prepare an uplift to beta please? Thanks

(In reply to Pascal Chevrel:pascalc from comment #5)

I'd like to see it verified on nightly.
Dave could you prepare an uplift to beta please? Thanks

The existing patch aspplies directly to beta.

(In reply to Dave Townsend [:mossop] (he/him) from comment #6)

(In reply to Pascal Chevrel:pascalc from comment #5)

I'd like to see it verified on nightly.
Dave could you prepare an uplift to beta please? Thanks

The existing patch aspplies directly to beta.

OK, but we need a formal uplift request on this patch to have it on relman and sheriffs radar and to have good bug history for our machine learning tools :)

(In reply to Pascal Chevrel:pascalc from comment #7)

(In reply to Dave Townsend [:mossop] (he/him) from comment #6)

(In reply to Pascal Chevrel:pascalc from comment #5)

I'd like to see it verified on nightly.
Dave could you prepare an uplift to beta please? Thanks

The existing patch aspplies directly to beta.

OK, but we need a formal uplift request on this patch to have it on relman and sheriffs radar and to have good bug history for our machine learning tools :)

Sorry, thought your comment meant you wanted to wait till it was verified on nightly before then.

Comment on attachment 9056642 [details]
Bug 1542221: Correctly save the state of nsIToolkitProfileService.startWithLastProfile. r=Gijs

Beta/Release Uplift Approval Request

• Feature/Bug causing the regression: Bug 1527704
• User impact if declined: User won't be able to switch between showing the profile manager on startup or not.
• Is this code covered by automated tests?: Yes
• Has the fix been verified in Nightly?: No
• Needs manual test from QE?: No
• If yes, steps to reproduce:
• List of other uplifts needed: None
• Risk to taking this patch: Low
• Why is the change risky/not risky? (and alternatives if risky): Extremely simple fix to a stupid mistake. Well tested. No risk to taking this at all.
• String changes made/needed:

I can confirm this issue is fixed, I verified using Fx 68.0a1(2019-04-09), on Windows 10 x64.

Comment on attachment 9056642 [details]
Bug 1542221: Correctly save the state of nsIToolkitProfileService.startWithLastProfile. r=Gijs

Low risk patch with tests for a P1 regression in 67 and verified by QA on Nightly, uplift approved for 67 beta 10, thanks Dave!

https://hg.mozilla.org/releases/mozilla-beta/rev/8842c0d0cef2

I can confirm this issue is no longer reproducible. I verified using Fx 67.0b10 on Windows 10 x64.