1971702 - Opera browser is not listed when importing data

Status: VERIFIED FIXED

(Firefox :: Migration, defect, P3)

Description

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

Attachment: image (3).png

Found in

• 141.0a1 (2025-06-11)

Affected versions

• 141.0a1
• 140.0b8
• 139.0.4
• 128.11.0esr

Tested platforms

• Affected platforms: Windows 11, macOS 13, Ubuntu 22.04
• Unaffected platforms: none

Preconditions

• Have Opera browser installed and some saved data (bookmarks, history, passwords, payment methods)

Steps to reproduce

1. Open about:preferences#general
2. Click the "Import Data" button and select "Opera" browser from the list

Expected result

• Opera browser should be listed as an option

Actual result

• Opera browser is not listed

Regression range

• Probably not a Firefox regression. The behavior can be reproduced with older builds as well (e.g. with Firefox Nightly 112.0a1). In the past, Opera was listed as an option when importing data

Additional notes

• See the attached screenshot
• Not reproducing with OperaGX or Vivaldi - they are listed
• Importing data to Opera from Firefox works
• Opera version: 119.0.5497.88

Comment 1

[Mike Conley (:mconley) (:⚙️)]

Hi Bianca. Are you able to test older versions of Opera to determine if this is something that they recently broke on their side?

Comment 2

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

(In reply to Mike Conley (:mconley) (:⚙️) from comment #1)

Hi Bianca. Are you able to test older versions of Opera to determine if this is something that they recently broke on their side?

Hey Mike,
Of course. After further investigation, it seems the issue first appeared in Opera 104.0.4944.23. When using the previous Opera version (103.0.4928.47), the browser is listed in the Import data modal.
I tested this on both Windows 11 and macOS 13, each time with a clean install and a new Opera profile. Also, if updating from the working version to the latest version (119.0.5497.88), Opera is still not offered as on option when importing data.
Please let me know if I can provide more details!

Comment 3

[Mike Conley (:mconley) (:⚙️)]

Thanks, Bianca.

Are you able to determine if Opera has changed where the profile is located in 104.0.4944.23 vs 103.0.4928.47? Apparently, visiting opera://about will tell you where the profile folder is.

Comment 4

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

(In reply to Mike Conley (:mconley) (:⚙️) from comment #3)

Thanks, Bianca.

Are you able to determine if Opera has changed where the profile is located in 104.0.4944.23 vs 103.0.4928.47? Apparently, visiting opera://about will tell you where the profile folder is.

It seems that the difference is that starting with v. 104.0.4944.23 an additional "Default" folder is created -> Profile:C:\Users\svuser\AppData\Roaming\Opera Software\Opera Stable\Default vs v. 103.0.4928.47 -> Profile:C:\Users\svuser\AppData\Roaming\Opera Software\Opera Stable

Comment 5

[Mike Conley (:mconley) (:⚙️)]

Okay, thank you! I'll see if I can find time for this next week.

Comment 6

[Mike Conley (:mconley) (:⚙️)]

Attachment: Bug 1971702 - Update Opera migrator to account for the Default user profile. r?#migration-reviewers!

Comment 7

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/a9519c00dd9a
https://hg.mozilla.org/integration/autoland/rev/670943479839
Update Opera migrator to account for the Default user profile. r=migration-reviewers,Gijs

Comment 8

[amarc]

https://hg.mozilla.org/mozilla-central/rev/670943479839

Comment 9

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

The patch landed in nightly and beta is affected.
:mconley, is this bug important enough to require an uplift?

• If yes, please nominate the patch for beta approval.
  • See https://wiki.mozilla.org/Release_Management/Requesting_an_Uplift for documentation on how to request an uplift.
• If no, please set status-firefox141 to wontfix.

For more information, please visit BugBot documentation.

Comment 10

[Mike Conley (:mconley) (:⚙️)]

Leaving this needinfo while I wait for the Ubuntu snap instance of Firefox Nightly to be updated with this patch so I can test it.

Comment 11

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

Verified as fixed using Firefox Nightly 142.0a1 (2025-06-30) on macOS 13, Windows 11 and Ubuntu 22.04 (tar.xz build). Opera browser is now listed when importing data and the import works correctly.

Comment 12

[Mike Conley (:mconley) (:⚙️)]

Attachment: Bug 1971702 - Update Opera migrator to account for the Default user profile. r?#migration-reviewers!

Original Revision: https://phabricator.services.mozilla.com/D254992

Comment 13

[Phabricator Automation]

firefox-beta Uplift Approval Request

• User impact if declined: Users will be unable to import from modern versions of the Opera browser
• Code covered by automated testing: no
• Fix verified in Nightly: yes
• Needs manual QE test: yes
• Steps to reproduce for manual QE testing: Install a modern version of Opera on Windows, macOS and Linux, and ensure that profile data from that install can be imported into Firefox.
• Risk associated with taking this patch: Very low.
• Explanation of risk level: This is a very contained change to the Opera migrator, which isn't working in its current state because Opera changed how they store profile data. This change adapts us to the new storage location (while also keeping us compatible with older versions of Opera)
• String changes made/needed: None.
• Is Android affected?: no

Comment 14

[Pulsebot]

https://github.com/mozilla-firefox/firefox/commit/9542ac00ec5e
https://hg.mozilla.org/releases/mozilla-beta/rev/d241b176ed60

Comment 15

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

(In reply to Bianca Hidecuti, Desktop Test Engineering [:bhidecuti] from comment #11)

Verified as fixed using Firefox Nightly 142.0a1 (2025-06-30) on macOS 13, Windows 11 and Ubuntu 22.04 (tar.xz build). Opera browser is now listed when importing data and the import works correctly.

Verified as fixed using Firefox 141.0b6 on macOS 13, Windows 11 and Ubuntu 22.04 (tar.xz build) as well.

Comment 16

[Ryan VanderMeulen [:RyanVM]]

Is this something we want on the ESR branches also?

Comment 17

[Mike Conley (:mconley) (:⚙️)]

Attachment: Bug 1971702 - Update Opera migrator to account for the Default user profile. r?#migration-reviewers!

Original Revision: https://phabricator.services.mozilla.com/D254992

Comment 18

[Phabricator Automation]

firefox-esr140 Uplift Approval Request

• User impact if declined: Users will be unable to import from modern versions of the Opera browser
• Code covered by automated testing: no
• Fix verified in Nightly: yes
• Needs manual QE test: yes
• Steps to reproduce for manual QE testing: Install a modern version of Opera on Windows, macOS and Linux, and ensure that profile data from that install can be imported into Firefox.
• Risk associated with taking this patch: Very low.
• Explanation of risk level: This is a very contained change to the Opera migrator, which isn't working in its current state because Opera changed how they store profile data. This change adapts us to the new storage location (while also keeping us compatible with older versions of Opera)
• String changes made/needed: None.
• Is Android affected?: no

Comment 19

[Pulsebot]

https://hg.mozilla.org/releases/mozilla-esr140/rev/39af27d2c6a5

Comment 20

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

(In reply to Bianca Hidecuti, Desktop Test Engineering [:bhidecuti] from comment #11)

Verified as fixed using Firefox Nightly 142.0a1 (2025-06-30) on macOS 13, Windows 11 and Ubuntu 22.04 (tar.xz build). Opera browser is now listed when importing data and the import works correctly.

Verified as fixed using Firefox 140.2.0esr-build1 on macOS 13, Windows 11 and Ubuntu 22.04 (tar.xz build) as well.