1963468 - Tab Group pop-up can be scrolled outside the browser window when enough tabs are open for the list to be scrollable

Status: NEW

(Firefox :: Tabbed Browser, defect, P3)

Description

[beish97]

Attachment: tab_group_popup_slide.mp4

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:138.0) Gecko/20100101 Firefox/138.0

Steps to reproduce:

Open enough tabs for the tab list to be scrollable.
Obtain a tab group pop-up (either when creating a new group or right clicking an existing one), preferably close to the window edge.
Scroll the tab list while the pop-up is open.

Actual results:

The tab group pop-up slides outside the browser window.

Expected results:

The pop-up should be closed once the associated tab group is scrolled out of view or stay at the edge within the browser window.

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

[Monica Chiorean]

I am not able to reproduce the issue on Win11x64 using Firefox builds 138 and 140.
Beish97, can you please see if this also happen with a new and empty profile? See https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems#w_6-create-a-new-firefox-profile
Thank you.

Comment 3

[beish97]

Hi,

The video capture included was taken on a fresh profile. I can confirm that this also happens on my work machine, which is Windows 11 Pro x64 with Firefox 138.0.1 (also when using a fresh profile).

Comment 4

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

The severity field is not set for this bug.
:sthompson, could you have a look please?

For more information, please visit BugBot documentation.

Comment 5

[Monica Chiorean]

Beish97, does the issue still reproduce on latest 141.0? as some changes were made. Thank you.

Comment 6

[beish97]

(In reply to Monica Chiorean from comment #5)

Beish97, does the issue still reproduce on latest 141.0? as some changes were made. Thank you.

The behavior is still there. Checked on versions 141.0b9 and 142.0a1 running on Win10 x64 and Fedora 42 x64.

Comment 7

[Stephen Thompson [:sthompson]]

Also reproducible on macOS in Nightly 143.

:amylee do you have a recommendation for what we should do with the tab group context menu when its tab group label scrolls out of view? I think it'd be simple and reasonable to close the menu.

Comment 8

[Amy Lee [:amylee] UX]

I agree, we should close the panel if the tab strip starts to scroll.

Comment 10

[Stephen Thompson [:sthompson]]

Based on bug 1987280, we should confirm that any fix we make also works with multiple monitors.