1832979 - Close button missing on all tabs

Status: RESOLVED INCOMPLETE

(Firefox :: Tabbed Browser, defect)

Description

[Aeed]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0

Steps to reproduce:

Updated from Firefox developer edition 112 (can't remember the exact sub-release) to 113 (again, can't remember the exact sub-release). I have just updated to Developer edition v114.0b3 and the issue is not yet resolved. Note: I have a reasonably high number of tabs open (300 tabs at the moment)

OS: Windows 10

Actual results:

Close button missing on all tabs.

Expected results:

Close button should appear on a tab when mouseovering the tab, or when tab is selected.

Comment 1

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

The Bugbug bot thinks this bug should belong to the 'Firefox::Tabbed Browser' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[Francesco Lodolo [:flod]]

Are you using a non-default theme? Are you using userChrome.css?
A screenshot of the UI would help.

Comment 3

[nicoleta.sibisan]

Thank you for reporting this!

Close button not visible while hovering over tab

• issue reproduced on MacOS13, Win 10 and Ubuntu 22.04 with Fx versions 102.11.0esr , 113.0.1, 114.0b7, 115.0a1 (2023-05-22) with the following steps:

1. Launch Firefox
2. Ctrl/Cmd +T multiple times (the number of times depended on the Browser Window size).

Not a regression - this issue can be reproduced in Firefox version 81.0a1 (2020-07-27).
Note - the X (close button appears if you click on the tab).

Close button not visible after clicking on a tab

• could not reproduce the issue in Developer or regular edition - opened over 300 tabs.

Need more info
@Aeed cold you please bring some further clarifications:

1. Is the close button present after clicking on a tab?
2. If not, do you experience this issue with a new profile (https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles)?
3. Please see Comment 2 also.

Comment 4

[Ardelean Oana, Desktop Test Engineering [:oardelean]]

Marking this as RESOLVED INCOMPLETE due to the lack of answers from the reporter. Please re-open this if it's still reproducible on your end, thank you.