1629481 - Firefox does not render color emojis on Windows 7

Status: NEW

(Core :: Graphics: Text, defect, P3)

Description

[jayaherkar]

Attachment: Screenshot describing the issue

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0

Steps to reproduce:

I updated Windows 7 and then suddenly this issue started to happen

Actual results:

I'm getting half emojis black and half emojis colorful. Some emojis are rendering perfectly but some emojis are not rendering.

Expected results:

Expected result would be Firefox only to display colorful rendered emojis (Twemoji Mozilla)

Comment 1

[Jeronimo Torti (Please send NI request to Brindusa Tot)]

Hi,
I was unable to reproduce this issue on my end, I tried on Windows 10 and 7, with Firefox Nightly version 77.0a1 (2020-04-17) (64-bit) and Release 75 (64-bit).

Does this issue occur with a fresh profile as well? You can find the steps here: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles?redirectlocale=en-US&redirectslug=Managing-profiles#w_starting-the-profile-manager

You can also try testing if the issue is reproducible in safe mode, here is a link that can help you:
https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode

Or you can also download Firefox Nightly from here: https://nightly.mozilla.org/ , to see if the issue still occurs there as well.

Thanks in advance. I've already chosen a component for this bug in hope that someone with more expertise may look at it. We'll await their answer.

Regards,
Jerónimo.

Comment 2

[Jessie [:jbonisteel] pls NI]

Can you please attach the contents of about:support as a text file to this bug?

Comment 3

[Emma Humphries ☕️🎸🧞‍♀️✨ (she/they) [:emceeaich] (Pacific Time) use needinfo]

These are current, open bugs with a Severity of critical. The Severity of these bugs is being changed to S2 to be consistent with the May 4 2020 Severity definitions.

Please let Release Management know if these bugs are still S2.

Comment 4

[Jessie [:jbonisteel] pls NI]

We aren't shipping WebRender by default on Win7 yet.

Comment 5

[Darkspirit]

This can be reproduced without WebRender
mozregression --launch 2020-06-12 --pref gfx.webrender.force-disabled:true -a https://addons.mozilla.org/en-US/firefox/addon/awesome-emoji-picker/

Comment 6

[Jeff Muizelaar [:jrmuizel]]

Any thoughts Jonathan?

Comment 7

[Darkspirit]

Attachment: firefox-vs-chrome.png

If you click on the "Demo: Native Style" picker, you can see that most flags are shown as country codes as seen in comment 0: https://emoji-button.js.org/
It looks worse in Chrome!

Comment 8

[Jonathan Kew [:jfkthame]]

Given this statement:

I updated Windows 7 and then suddenly this issue started to happen

I wonder if a Win7 update has introduced a font that covers some of the emoji codepoints, and is taking precedence over our Twemoji Mozilla font in the emoji-picker window?

Ah, look at this:
https://support.microsoft.com/en-gb/help/2729094/an-update-for-the-segoe-ui-symbol-font-in-windows-7-and-in-windows-ser

So apparently the (monochrome) Segoe UI Symbol font now includes a bunch of emoji codepoints.

Bug 1371386 ought to help here, but the alternative fix would be for the add-on to explicitly list desired emoji fonts in its CSS rather than relying on fallback to find "the right thing".

Comment 9

[j.j.]

Is this fixed? Cannot reproduce.