1998730 - Intermittent TV browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js | We are starting with the default zoom. - Got 1, expected 1.5

Status: RESOLVED FIXED

(Core :: Privacy: Anti-Tracking, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: abutkovits [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=534620408&repo=autoland&task=aEvloPO9Qo66mT53Yw4ELg.0
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/aEvloPO9Qo66mT53Yw4ELg/runs/0/artifacts/public/logs/live_backing.log
Reftest URL: https://hg.mozilla.org/mozilla-central/raw-file/default/layout/tools/reftest/reftest-analyzer.xhtml#logurl=https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/aEvloPO9Qo66mT53Yw4ELg/runs/0/artifacts/public/logs/live_backing.log&only_show_unexpected=1

---

[task 2025-11-06T15:06:46.229+00:00] 15:06:46     INFO - TEST-START | browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js
[task 2025-11-06T15:06:47.946+00:00] 15:06:47     INFO - TEST-INFO | started process screentopng
[task 2025-11-06T15:06:48.143+00:00] 15:06:48     INFO - TEST-INFO | screentopng: exit 0
[task 2025-11-06T15:06:48.143+00:00] 15:06:48     INFO - Buffered messages logged at 15:06:46
[task 2025-11-06T15:06:48.143+00:00] 15:06:48     INFO - Entering test bound 
[task 2025-11-06T15:06:48.144+00:00] 15:06:48     INFO - Console message: [JavaScript Warning: "HTTPS-First Mode: Upgrading insecure speculative TCP connection “http://example.net/browser/browser/components/resistfingerprinting/test/browser/file_dummy.html” to use “https”."]
[task 2025-11-06T15:06:48.144+00:00] 15:06:48     INFO - TEST-PASS | browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js | We are starting with the default zoom. - 
[task 2025-11-06T15:06:48.145+00:00] 15:06:48     INFO - TEST-PASS | browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js | privacy.resistFingerprinting is false, site-specific zoom should not be reset when clearing FPP state - 
[task 2025-11-06T15:06:48.145+00:00] 15:06:48     INFO - Buffered messages logged at 15:06:47
[task 2025-11-06T15:06:48.146+00:00] 15:06:48     INFO - TEST-PASS | browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js | privacy.resistFingerprinting is true, site-specific zoom should be reset when clearing FPP state for tab1 - 
[task 2025-11-06T15:06:48.146+00:00] 15:06:48     INFO - Buffered messages finished
[task 2025-11-06T15:06:48.147+00:00] 15:06:48     INFO - TEST-UNEXPECTED-FAIL | browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js | We are starting with the default zoom. - Got 1, expected 1.5
[task 2025-11-06T15:06:48.147+00:00] 15:06:48     INFO - Stack trace:
[task 2025-11-06T15:06:48.148+00:00] 15:06:48     INFO - chrome://mochikit/content/browser-test.js:test_is:1800
[task 2025-11-06T15:06:48.148+00:00] 15:06:48     INFO - chrome://mochitests/content/browser/browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js:runTest:12
[task 2025-11-06T15:06:48.148+00:00] 15:06:48     INFO - chrome://mochitests/content/browser/browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js:null:74
[task 2025-11-06T15:06:48.148+00:00] 15:06:48     INFO - chrome://mochikit/content/browser-test.js:handleTask:1292
[task 2025-11-06T15:06:48.148+00:00] 15:06:48     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1381
[task 2025-11-06T15:06:48.148+00:00] 15:06:48     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1528
[task 2025-11-06T15:06:48.148+00:00] 15:06:48     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1268
[task 2025-11-06T15:06:48.148+00:00] 15:06:48     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1058
[task 2025-11-06T15:06:48.148+00:00] 15:06:48     INFO - TEST-PASS | browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js | privacy.resistFingerprinting is false, site-specific zoom should not be reset when clearing FPP state - 
[task 2025-11-06T15:06:48.506+00:00] 15:06:48     INFO - TEST-PASS | browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js | privacy.resistFingerprinting is true, site-specific zoom should be reset when clearing FPP state for tab1 - 
[task 2025-11-06T15:06:48.712+00:00] 15:06:48     INFO - Leaving test bound 
[task 2025-11-06T15:06:49.093+00:00] 15:06:49     INFO - GECKO(5201) | MEMORY STAT vsizeMaxContiguous not supported in this build configuration.
[task 2025-11-06T15:06:49.093+00:00] 15:06:49     INFO - GECKO(5201) | MEMORY STAT | vsize 12475MB | residentFast 629MB | heapAllocated 309MB
[task 2025-11-06T15:06:49.094+00:00] 15:06:49     INFO - TEST-OK | browser/components/resistfingerprinting/test/browser/browser_bug1975753_site_specific_zoom_level.js | took 2865ms
[task 2025-11-06T15:06:49.116+00:00] 15:06:49     INFO - checking for open sidebars

Comment 1

[Intermittent Failures Robot]

21 failures were associated with this bug yesterday.

Repository breakdown:

• autoland: 21

Table

	no_variant
linux2404-x86_64/debug	6
linux2404-x86_64/opt	6
linux2404-x86_64/tsan	5
windows11-x86/debug	1
windows11-x86/opt	1
windows11-x86_64/debug	1
windows11-x86_64/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1998730&startday=2025-11-06&endday=2025-11-06&tree=all

Comment 2

[Tom Ritter [:tjr] (OOTO until April)]

I think this is caused by Bug 1998435 ?

Comment 3

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

Set release status flags based on info from the regressing bug 1998435

:pierov, since you are the author of the regressor, bug 1998435, could you take a look?

For more information, please visit BugBot documentation.

Comment 4

[Manuel Bucher [:manuel]]

(In reply to Tom Ritter [:tjr] from comment #2)

I think this is caused by Bug 1998435 ?

Likely yes. But I think fixed by backout and not a problem with revised version that landed with the second attempt.

Comment 5

[Cristina Horotan [:chorotan]]

All the failures are fixed by commit https://hg.mozilla.org/integration/autoland/rev/41d7609a1566.

Comment 6

[Pier Angelo Vendrame]

I don't know if the second attempt fixed the problem.
I've seen that removeGlobal also has an optional callback, so I think we might need to promisify it as well.

Comment 7

[Pier Angelo Vendrame]

Attachment: Bug 1998730 - Promisify also removeGlobal in Bug 1998435's test. r?manuel

Comment 8

[Intermittent Failures Robot]

21 failures were associated with this bug in the last 7 days.

Repository breakdown:

• autoland: 21

Table

	no_variant
linux2404-x86_64/debug	6
linux2404-x86_64/opt	6
linux2404-x86_64/tsan	5
windows11-x86/debug	1
windows11-x86/opt	1
windows11-x86_64/debug	1
windows11-x86_64/opt	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1998730&startday=2025-11-03&endday=2025-11-09&tree=all

Comment 9

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

A patch has been attached on this bug, which was already closed. Filing a separate bug will ensure better tracking. If this was not by mistake and further action is needed, please alert the appropriate party. (Or: if the patch doesn't change behavior -- e.g. landing a test case, or fixing a typo -- then feel free to disregard this message)

Comment 10

[Phabricator Automation]

Comment on attachment 9525499 [details]
Bug 1998730 - Promisify also removeGlobal in Bug 1998435's test. r?manuel

Revision D271888 was moved to bug 1999527. Setting attachment 9525499 [details] to obsolete.