1979066 - Intermittent browser/components/tabbrowser/test/browser/tabs/browser_tab_groups_telemetry.js | single tracking bug

Status: RESOLVED FIXED

(Firefox :: Tabbed Browser, defect, P5)

Description

[Treeherder Bug Filer]

Filed by: abutkovits [at] mozilla.com
Parsed log: https://treeherder.mozilla.org/logviewer?job_id=519308439&repo=mozilla-central
Full log: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/ZdBlqTrzTgW4LO6XmaIVKQ/runs/1/artifacts/public/logs/live_backing.log

---

Comment 1

[Joel Maher ( :jmaher ) (UTC -8)]

This passed when run in confirm failure mode (rerun the test 4x in the same session).

This indicates that the test is probably a lower frequency intermittent and harder to reproduce/debug.

Comment 2

[Intermittent Failures Robot]

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

Repository breakdown:

• autoland: 11
• mozilla-central: 4
• mozilla-beta: 4

Table

	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	vertical_tab
linux2404-x86_64/opt				9/53
macosx1015-x86_64/debug		4/71
macosx1015-x86_64/opt		4/79
windows11-x86_64/opt	1/18			1/59

• x/y indicates test failures and total runs; only x means number of runs is unknown.

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-07-21&endday=2025-07-27&tree=all

Comment 3

[Intermittent Failures Robot]

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

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-esr140: 5
• try: 1
• autoland: 18
• mozilla-central: 4
• mozilla-beta: 2

Table

	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan						5/288
linux2404-x86_64/opt			22/64
macosx1015-x86_64/debug	1/67
windows11-x86/opt	1/14
windows11-x86_64/opt			1/55

• x/y indicates test failures and total runs; only x means number of runs is unknown.

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-07-28&endday=2025-08-03&tree=all

Comment 4

[Intermittent Failures Robot]

31 failures were associated with this bug in the last 7 days.
This is the #40 most frequent failure this week.

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-esr140: 2
• autoland: 24
• mozilla-central: 4
• try: 1

Table

	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan						2
linux2404-x86_64/opt			27
macosx1500-aarch64/opt	1
windows11-x86_64/opt			1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-08-11&endday=2025-08-17&tree=all

Comment 5

[Intermittent Failures Robot]

15 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-esr140: 2
• autoland: 6
• mozilla-central: 6
• mozilla-beta: 1

Table

	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan						2
linux2404-x86_64/ccov	1
linux2404-x86_64/opt			4			1
windows11-x86/opt	1
windows11-x86_64/ccov	4
windows11-x86_64/opt	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-08-22&endday=2025-08-22&tree=all

Comment 6

[Intermittent Failures Robot]

15 failures were associated with this bug yesterday.

Repository breakdown:

• autoland: 7
• mozilla-central: 7
• try: 1

Table

	a11y-checks-swr	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux2404-x86_64/opt	2			5			1
macosx1015-x86_64/opt		1		2
macosx1500-aarch64/opt		1
windows11-x86_64/ccov		3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-08-23&endday=2025-08-23&tree=all

Comment 7

[Intermittent Failures Robot]

68 failures were associated with this bug in the last 7 days.
This is the #22 most frequent failure this week.

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-esr140: 7
• autoland: 38
• try: 4
• mozilla-central: 17
• mozilla-beta: 2

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/asan								1
linux1804-x86_64/tsan								6
linux2404-x86_64/ccov			1
linux2404-x86_64/debug			1
linux2404-x86_64/opt	2		1		25			2
macosx1015-x86_64/opt			3		2
macosx1470-x86_64/debug			1
macosx1500-aarch64/opt			2		3
windows11-x86/debug			1
windows11-x86/opt			4
windows11-x86_64/ccov			8
windows11-x86_64/debug			1
windows11-x86_64/opt		1	3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-08-18&endday=2025-08-24&tree=all

Comment 8

[Intermittent Failures Robot]

15 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-esr140: 2
• autoland: 8
• mozilla-central: 4
• mozilla-beta: 1

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/asan								1
linux1804-x86_64/tsan								1
linux2404-x86_64/opt	1				5			2
macosx1500-aarch64/opt					1
windows11-x86_64/ccov			1
windows11-x86_64/opt		1	1		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-08-27&endday=2025-08-27&tree=all

Comment 9

[Intermittent Failures Robot]

66 failures were associated with this bug in the last 7 days.
This is the #25 most frequent failure this week.

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-esr140: 7
• autoland: 38
• mozilla-central: 19
• mozilla-release: 1
• mozilla-beta: 1

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/asan								1
linux1804-x86_64/opt								1
linux1804-x86_64/tsan								5
linux2404-x86_64/opt	4				25			4
macosx1015-x86_64/opt			3		3
macosx1500-aarch64/opt			1		4
windows11-x86/opt			1
windows11-x86_64/ccov			9
windows11-x86_64/opt		1	1		3

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-08-25&endday=2025-08-31&tree=all

Comment 10

[Intermittent Failures Robot]

23 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-esr140: 1
• autoland: 17
• mozilla-central: 4
• mozilla-beta: 1

Table

	a11y-checks-swr	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan							1
linux2404-x86_64/opt	4	1		11			1
windows11-x86/opt		1
windows11-x86_64/ccov		3
windows11-x86_64/opt		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-04&endday=2025-09-04&tree=all

Comment 11

[Intermittent Failures Robot]

27 failures were associated with this bug yesterday.

Repository breakdown:

• autoland: 19
• mozilla-central: 8

Table

	a11y-checks-swr	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux2404-x86_64/opt	6			12			2
macosx1500-aarch64/opt				3
windows11-x86_64/ccov		4

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-05&endday=2025-09-05&tree=all

Comment 12

[Intermittent Failures Robot]

103 failures were associated with this bug in the last 7 days.
This is the #19 most frequent failure this week.

This failure happened more than 75 times this week! Resolving this bug is a very high priority.

Try to resolve this bug as soon as possible. If unresolved for 1 week, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-esr140: 1
• mozilla-central: 33
• autoland: 67
• mozilla-beta: 2

Table

	a11y-checks-swr	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan							1
linux2404-x86_64/opt	14	1		48			6
macosx1015-x86_64/opt		1		2
macosx1500-aarch64/opt		1		8
windows11-x86/opt		1
windows11-x86_64/ccov		19
windows11-x86_64/opt		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-01&endday=2025-09-07&tree=all

Comment 13

[Intermittent Failures Robot]

24 failures were associated with this bug yesterday.

Repository breakdown:

• autoland: 20
• try: 2
• mozilla-central: 2

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux2404-x86_64/opt	1				12			1
macosx1015-x86_64/opt			2		1
macosx1500-aarch64/opt					3
windows11-x86_64/ccov			2
windows11-x86_64/opt		1			1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-09&endday=2025-09-09&tree=all

Comment 14

[Intermittent Failures Robot]

19 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-central: 5
• autoland: 14

Table

	a11y-checks-swr	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	vertical_tab
linux2404-x86_64/opt	2			12
macosx1015-x86_64/opt				2
macosx1500-aarch64/opt				1
windows11-x86_64/ccov		2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-11&endday=2025-09-11&tree=all

Comment 15

[Intermittent Failures Robot]

81 failures were associated with this bug in the last 7 days.
This is the #15 most frequent failure this week.

This failure happened more than 75 times this week! Resolving this bug is a very high priority.

Try to resolve this bug as soon as possible. If unresolved for 1 week, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-esr140: 1
• autoland: 62
• mozilla-central: 13
• try: 4
• mozilla-release: 1

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan								1
linux2404-x86_64/opt	8				42			3
macosx1015-x86_64/opt			3		6
macosx1500-aarch64/opt			2		6
windows11-x86_64/ccov			8
windows11-x86_64/opt		1			1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-08&endday=2025-09-14&tree=all

Comment 16

[Intermittent Failures Robot]

19 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-esr140: 1
• autoland: 8
• mozilla-central: 9
• mozilla-beta: 1

Table

	a11y-checks-swr	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan							1
linux2404-x86_64/opt	1			8			1
macosx1015-x86_64/opt				1
macosx1500-aarch64/opt		3		2
windows11-x86_64/ccov		1
windows11-x86_64/opt		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-15&endday=2025-09-15&tree=all

Comment 17

[Intermittent Failures Robot]

19 failures were associated with this bug yesterday.

Repository breakdown:

• autoland: 13
• mozilla-central: 5
• try: 1

Table

	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux2404-x86_64/opt			14			2
macosx1015-x86_64/opt	1
macosx1500-aarch64/opt			1
windows11-x86_64/ccov	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-16&endday=2025-09-16&tree=all

Comment 18

[Intermittent Failures Robot]

25 failures were associated with this bug yesterday.

Repository breakdown:

• autoland: 20
• mozilla-central: 4
• try: 1

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux2404-x86_64/debug								1
linux2404-x86_64/opt	4				16
macosx1500-aarch64/opt			1		1
windows11-x86_64/ccov			1
windows11-x86_64/opt		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-17&endday=2025-09-17&tree=all

Comment 19

[Intermittent Failures Robot]

15 failures were associated with this bug yesterday.

Repository breakdown:

• autoland: 12
• mozilla-beta: 1
• mozilla-central: 1
• try: 1

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	vertical_tab
linux2404-x86_64/debug					1
linux2404-x86_64/opt	3				6
macosx1500-aarch64/opt			1		3
windows11-x86_64/opt		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-18&endday=2025-09-18&tree=all

Comment 20

[Intermittent Failures Robot]

28 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-esr140: 1
• autoland: 20
• mozilla-central: 4
• try: 1
• mozilla-beta: 2

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/asan								1
linux2404-x86_64/opt	7				13
macosx1015-x86_64/opt			1		2
macosx1500-aarch64/opt			2
windows11-x86_64/opt		1	1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-19&endday=2025-09-19&tree=all

Comment 21

[Cristina Horotan [:chorotan]]

Attachment: Bug 1979066 - disable browser_tab_groups_telemetry.js for causing frequent failures. r=#intermittent-reviewers

Comment 22

[Intermittent Failures Robot]

116 failures were associated with this bug in the last 7 days.
This is the #14 most frequent failure this week.

This failure happened more than 75 times this week! Resolving this bug is a very high priority.

Try to resolve this bug as soon as possible. If unresolved for 1 week, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-esr140: 2
• autoland: 79
• mozilla-central: 24
• try: 5
• mozilla-beta: 6

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/asan								1
linux1804-x86_64/tsan								1
linux2404-x86_64/debug					1			1
linux2404-x86_64/opt	17				61			3
macosx1015-x86_64/opt			4		4
macosx1500-aarch64/opt			8		7
windows11-x86_64/ccov			3
windows11-x86_64/opt		3	2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-15&endday=2025-09-21&tree=all

Comment 23

[Intermittent Failures Robot]

19 failures were associated with this bug yesterday.

Repository breakdown:

• mozilla-esr140: 2
• autoland: 16
• mozilla-central: 1

Table

	a11y-checks-swr	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan							2
linux2404-x86_64/opt	6			9			1
macosx1015-x86_64/opt				1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-22&endday=2025-09-22&tree=all

Comment 24

[Stephen Thompson [:sthompson]]

Attachment: Bug 1979066 - ensure context tab is loaded before opening context menu r=jswinarton,dwalker

Fixes TypeError: can't access property "click", tabGroupButton is null that occurs when shouldSaveTabsToGroup(this.contextTabs) https://searchfox.org/firefox-main/rev/ad97131360471d36dfd9cf85695dde35914843bc/browser/components/tabbrowser/content/tabbrowser.js#9373 evaluates to false.

This patch ensures that all of the tabs are loaded and flushed to session state. This ensures the call to getContextMenu(win.gBrowser.tabs.at(-1), "tabContextMenu") will allow the TabContextMenu code to populate saved groups into the tab context menu.

Comment 25

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/4d6e59083a05
https://hg.mozilla.org/integration/autoland/rev/15f5c89782b4
ensure context tab is loaded before opening context menu r=dwalker,tabbrowser-reviewers

Comment 26

[Cosmin Sabou [:CosminS]]

https://hg.mozilla.org/mozilla-central/rev/15f5c89782b4

Comment 27

[Cosmin Sabou [:CosminS]]

Still failing, TH link.
Log: https://treeherder.mozilla.org/logviewer?job_id=528574481&repo=autoland&task=XIFe-VDnQMKc2zrgg-XK2g.0

Comment 28

[Stephen Thompson [:sthompson]]

Looks like it was able to get further in the test but is now timing out elsewhere :(

I will work on a fix today.

Comment 29

[Intermittent Failures Robot]

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

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-esr140: 4
• autoland: 38
• mozilla-central: 5
• mozilla-beta: 8

Table

	a11y-checks-swr	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan							4
linux2404-x86_64/debug		1
linux2404-x86_64/opt	13	1		16			7
macosx1015-x86_64/opt		4		1
macosx1470-x86_64/debug		1
macosx1500-aarch64/opt		3
windows11-x86/debug		1
windows11-x86_64/debug		1
windows11-x86_64/opt		2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-22&endday=2025-09-28&tree=all

Comment 30

[Intermittent Failures Robot]

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

This failure happened more than 30 times this week! Resolving this bug is a high priority.

Try to resolve this bug as soon as possible. If unresolved for 2 weeks, the affected test(s) may be disabled.

Repository breakdown:

• mozilla-esr140: 4
• autoland: 6
• mozilla-beta: 18
• mozilla-central: 1
• try: 1

Table

	a11y-checks-swr	msix	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/tsan								3
linux2404-x86_64/debug								1
linux2404-x86_64/opt	3				2			8
macosx1015-x86_64/opt			3
macosx1500-aarch64/opt			4
windows11-x86/opt			1
windows11-x86_64/opt		2	2		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-09-29&endday=2025-10-05&tree=all

Comment 31

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-esr140: 2
• autoland: 6
• mozilla-central: 1
• mozilla-release: 1

Table

	a11y-checks-swr	no_variant	socketprocess_networking	spi-nw	swgl	swgl+a11y_checks	swr	vertical_tab
linux1804-x86_64/opt							1
linux1804-x86_64/tsan							1
linux2404-x86_64/opt	3			3			1
windows11-x86_64/opt		1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-10-06&endday=2025-10-12&tree=all

Comment 32

[Intermittent Failures Robot]

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

Repository breakdown:

• mozilla-esr140: 1
• autoland: 4
• try: 2
• mozilla-release: 2
• mozilla-central: 2

Table

	a11y_checks+swgl	no_variant	socketprocess_networking	spi-nw	swgl	swr	vertical_tab
linux1804-x86_64/tsan						1
linux2404-x86_64/asan						1
linux2404-x86_64/opt				2		3
macosx1500-aarch64/opt		2
windows11-x86_64/opt		2

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-10-13&endday=2025-10-19&tree=all

Comment 33

[Stephen Thompson [:sthompson]]

Attachment: Bug 1979066 - try to reduce frequency of browser_tab_groups_telemetry intermittents r=dwalker,jswinarton

Comment 34

[Intermittent Failures Robot]

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

Repository breakdown:

• autoland: 14
• try: 1
• mozilla-beta: 2
• mozilla-release: 4

Table

	a11y-checks-swr	a11y_checks+swgl	msix	no_variant	socketprocess_networking	spi-nw	swgl	swr	vertical_tab
linux2404-x86_64/asan								1
linux2404-x86_64/opt	2					5		2
macosx1015-x86_64/opt				1
macosx1500-aarch64/opt				3
windows11-x86_64/debug			3	1		1
windows11-x86_64/opt			1			1

For more details, see:

https://treeherder.mozilla.org/intermittent-failures/bugdetails?bug=1979066&startday=2025-10-20&endday=2025-10-26&tree=all

Comment 35

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/657706db6552
https://hg.mozilla.org/integration/autoland/rev/9f1b7d9a6d3b
try to reduce frequency of browser_tab_groups_telemetry intermittents r=jswinarton,tabbrowser-reviewers

Comment 36

[amarc]

https://hg.mozilla.org/mozilla-central/rev/9f1b7d9a6d3b