1879809 - First window on first launch has missing taskbar label when taskbar grouping is disabled on Windows 11

Status: RESOLVED DUPLICATE of bug 1862415

(Core :: Widget: Win32, defect, P3)

Description

[Kestrel]

Attachment: Initial window does not have a label in the taskbar

STR:

1. Set "Combine taskbar buttons and hide labels" to "Never" in Windows 11 taskbar settings.
2. Open Nightly.

Expected:
First window's taskbar entry has a label like other applications.

Actual:
First window's taskbar entry only has an icon.

Label appears after opening a new window or a different application.

Workaround is to set browser.startup.blankWindow = false.

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=7f3e10bdd2af504b2affd3847c27a4ec3b8ca8a2&tochange=7fd01e6f31ce57069cf70c613f2002a828d068c7

Regressed by Bug 1870512.

Comment 1

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

:emilio, since you are the author of the regressor, bug 1870512, could you take a look? Also, could you set the severity field?

For more information, please visit BugBot documentation.

Comment 2

[Bob Hood [:bhood]]

Ray, can we please get Priority/Severity settings applied here?

Comment 3

[Ray Kraesig [:rkraesig]]

Since this is a regression that — if I'm reading this correctly — is about ready to go out into release, I'm going to go ahead and mark it P2/S3.

Comment 4

[Emilio Cobos Álvarez (:emilio)]

I think this is just bug 1862415, is this really a regression from bug 1870512?

Comment 5

[Ray Kraesig [:rkraesig]]

No, that does look to be the case; thanks for the identification. Reducing priority for now. (I'll give the reporter a chance to respond before closing-as-duplicate, though.)

Comment 6

[Kestrel]

Bug 1870512 changed the behavior of the taskbar label but it is not a regressing bug. The apparent regression was due to first launch showing two taskbar icons, the first without a label when previously it did not.