1873251 - Flatpak Separators at the top of the bookmarks bar have disappeared when starting Firefox

Status: UNCONFIRMED

(Core :: Graphics: WebRender, defect)

Description

[Maddi]

Steps to reproduce:

Firefox Flatpak Debian 12 Gnome.
Create a bookmark at the beginning of the bookmarks bar and insert a separator in front of it .
Close firefox and open it again. Now the separators have disappeared.

Click on the Windows key and the separators appear again.

Comment 1

[Maddi]

Attachment: 0.jpg

Comment 2

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

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

Comment 3

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

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

For more information, please visit BugBot documentation.

Comment 4

[Marco Bonardo [:mak]]

Considered the space taken by elements is still there, I suspect there is some graphics problem here, like the element not being rendered properly.
Is the problem reproducible in troubleshoot mode?
Could you please attach a log from about:support?

Comment 5

[Maddi]

The problem also occurs in Firefox 122(from Mozilla Repo), Flatpak, Snap and Firefox ESR. In Debian 12 an Testing, also in Ubuntu 24.04.
Reproducible with a new profile. I have not tried the "troubleshoot mode" mode with my profile. I have created a completely new .mozilla.

I can now narrow down the problem. The behavior only occurs when I switch Firefox in settings to German. The problem does not occur in English.

Comment 6

[Maddi]

Attachment: 1.txt

Comment 7

[Maddi]

Attachment: 2.txt

Comment 8

[Dão Gottwald [:dao]]

I can reproduce some weirdness with 121, en-US build on Ubuntu. Feels like a layout or graphics bug. E.g. just putting that window in the background and re-foregrounding it makes invisible separators re-appear. In fact, just unfocusing the window fixes it. I can't even switch to the browser toolbox to look at styles for hidden separators...

Comment 9

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

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

For more information, please visit BugBot documentation.