1725228 - Tab bar gets really tall if the title contains unicode like 𝔉𝔯𝔞𝔨𝔱𝔲𝔯

Status: RESOLVED DUPLICATE of bug 1704404

(Core :: Layout, defect)

Description

[Nicolas]

Attachment: Screenshot of the issue in action

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:90.0) Gecko/20100101 Firefox/90.0

Steps to reproduce:

Use Firefox on Linux.

Visit website with certain unicode (e.g. Fraktur) in the <title>, here's a test page: https://fratti.ch/titletest.html

Actual results:

My tabs are now three times as tall as they were previously

Expected results:

UI elements such as the tab bar should not increase their height depending on title content, especially not for content that doesn't even need the additional height

Comment 1

[Nicolas]

Apparently this is caused by some fonts shipped by mathjax2 (which is used by jupyter-notebook) as per https://bugzilla.mozilla.org/show_bug.cgi?id=1671525 but I still believe this is a separate bug due to this affecting the tab bar as well, but the original report concerning the URL bar.

Comment 2

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

The Bugbug bot thinks this bug should belong to the 'Core::Layout' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.