Arch Linux

Cassio Neri

Member

Registered: 2021-12-28

Posts: 3

[Solved] Firefox not rendering numbers on some websites.

Hi,

On some websites (e.g. archlinux.org) most numbers are not rendered by Firefox. (Letters seem to be fine though.) Here is a screenshot. In contrast, the page appears well on Konqueror.

It started yesterday (2025-11-29) after a a complete upgrade of my system (pacman -Syu).

In Firefox's font settings, I do allow pages to change fonts. Some pages (e.g. this one) do change the fonts and appear well. However, if I disable the feature, then they also break.

I firstly reported this issue on Mozilla's forum. I was suggested to install the binaries directly from mozilla.org. Since this suggestion does work, my guess (nothing other than a guess) is that the problem lies on the packaging.

I'm using

• firefox 145.0.2-1

• plasma-desktop 6.5.3-2

• wayland 1.24.0-1

Thanks,
Cassio.

Last edited by Cassio Neri (2025-12-02 21:47:25)

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 14,565

Re: [Solved] Firefox not rendering numbers on some websites.

Have you tried creating a fresh profile for firefox to verify if that also has the issue ?

See https://support.mozilla.org/en-US/kb/pr … x-profiles

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Cassio Neri

Member

Registered: 2021-12-28

Posts: 3

Re: [Solved] Firefox not rendering numbers on some websites.

Have you tried creating a fresh profile for firefox to verify if that also has the issue ?

Yes, I did and got the same issue.

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 71,526

Re: [Solved] Firefox not rendering numbers on some websites.

So what's your default sans serif font? Use the web inspector to check what FF resolves there for the affected text. Well then check what's wrong w/ that font.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Cassio Neri

Member

Registered: 2021-12-28

Posts: 3

Re: [Solved] Firefox not rendering numbers on some websites.

So what's your default sans serif font?

Spot on! You found theproblem. I don't know how it hapenned, but the defauls sans serif font was Twemoji Mozilla. I've changed it to Noto Sans and everything works fine now.

Many thanks.

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 71,526

Re: [Solved] Firefox not rendering numbers on some websites.

\o/
Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc