Web-bugs: www.google.com - Missing "Email" icon when sharing an AMP document

[softvision-oana-arbuzov]

URL: https://www.google.com/amp/s/www.forbes.com/sites/insertcoin/2017/08/07/game-of-thrones-did-two-very-smart-things-in-last-nights-fantastic-episode/amp/

Browser / Version: Firefox Mobile Nightly 57.0a1 (2017-08-07) - Chrome UA
Operating System: LG G5 (Android 7.0) - Resolution 1440 x 2560 pixels (~554 ppi pixel density)
Tested Another Browser: Yes

Problem type: Design is broken
Description: Missing email icon when sharing an AMP document

Steps to Reproduce:

1. Navigate to: https://www.google.com/amp/s/www.forbes.com/sites/insertcoin/2017/08/07/game-of-thrones-did-two-very-smart-things-in-last-nights-fantastic-episode/amp/.
2. Tap the “Share” button.
3. Observe first icon.

Expected Behavior:
Email icon is displayed.

Actual Behavior:
A black icon is displayed.

Note:

1. Not reproducible on Chrome (Mobile) 59.0.3071.125, on Firefox 54.0.1 Release and Firefox Nightly 57.0a1 (2017-08-02) without Chrome UA.
2. Screenshot attached.

Watchers:
@softvision-sergiulogigan
@softvision-oana-arbuzov

sv; gs

_From webcompat.com with ❤️_

[wellington1993]

Hi,

working fine at Desktop - WIN10 +Firefox 57
Anyone can reproduce the problem?

Thanks...

[MDTsai]

Confirmed, the email link rule is:

.email-share-link {
    background-image: url('data: image/svg+xml;charset=utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20512%20512%22%3E%3Cpath%20fill%3D%22%23ffffff%22%20d%3D%22M101.3%20141.6v228.9h0.3%20308.4%200.8V141.6H101.3zM375.7%20167.8l-119.7%2091.5%20-119.6-91.5H375.7zM127.6%20194.1l64.1%2049.1%20-64.1%2064.1V194.1zM127.8%20344.2l84.9-84.9%2043.2%2033.1%2043-32.9%2084.7%2084.7L127.8%20344.2%20127.8%20344.2zM384.4%20307.8l-64.4-64.4%2064.4-49.3V307.8z%22%2F%3E%3C%2Fsvg%3E');
    background-color: #000000;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    text-decoration: none;
    cursor: pointer;
}

Not the hash sign in data url problem. Move to needsdiagnosis.

[dtapuska]

I cannot reproduce on Firefox 54.0.1 on a Nexus 5 device.

[kereliuk]

I was able to reproduce this on mobile:

• Download firefox nightly and enable usb debugging
• Enable usb debugging on your device
• Download "phony" add-on in firefox nightly to change UA
• Configure "phony" to be android

[adamopenweb]

So I can reproduce this issue as well. But I think it might be out of scope. The issue actually happens with the Forbes code, but only with the UA spoofed to Chrome. They are actually serving Firefox Android an icon vs. the svg Chrome gets, it's even visually different.

It appears Forbes is working around a bug though. If we take the inline SVG data URI and dump into a JSFiddle, the SVG will not display in Firefox but it does in Chrome. https://jsfiddle.net/1yqafsxL/1/

If we decode the URI:

%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20512%20512%22%3E%3Cpath%20fill%3D%22%23ffffff%22%20d%3D%22M101.3%20141.6v228.9h0.3%20308.4%200.8V141.6H101.3zM375.7%20167.8l-119.7%2091.5%20-119.6-91.5H375.7zM127.6%20194.1l64.1%2049.1%20-64.1%2064.1V194.1zM127.8%20344.2l84.9-84.9%2043.2%2033.1%2043-32.9%2084.7%2084.7L127.8%20344.2%20127.8%20344.2zM384.4%20307.8l-64.4-64.4%2064.4-49.3V307.8z%22%2F%3E%3C%2Fsvg%3E

We get this, which will work as is in Firefox:

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path fill="#ffffff" d="M101.3 141.6v228.9h0.3 308.4 0.8V141.6H101.3zM375.7 167.8l-119.7 91.5 -119.6-91.5H375.7zM127.6 194.1l64.1 49.1 -64.1 64.1V194.1zM127.8 344.2l84.9-84.9 43.2 33.1 43-32.9 84.7 84.7L127.8 344.2 127.8 344.2zM384.4 307.8l-64.4-64.4 64.4-49.3V307.8z"/></svg>

This does have a hash sign in there. Though removing it, replacing with white and encoding again doesn't fix our problem. I tried as base 64 as well, but it doesn't work.

[dholbert]

This is due to the space after "data: ". It loads just fine if I remove that space character.

If possible, we should do some outreach to ask if they can remove that. But in the meantime I filed https://bugzilla.mozilla.org/show_bug.cgi?id=1389251 since it seems other browsers disagree with us on that handling (though I think we're more data-URI rfc/spec-compliant on this point, FWIW).

[adamopenweb]

Thank you @dholbert! We were actually just doing testing for Google Search in Firefox Android with a Chrome UA. The Forbes site is actually working OK with Firefox Android I think.

Let's close this report as invalid for now. If someone disagrees please open back up.

[miketaylr]

I don't think closed invalid is correct here. We're spoofing as Chrome, but we want to get served this content in the future. So let's move to contactready, but not reach out to google about this just yet (besides, they're tracking this as well. :))

[foolip]

Something doesn't add up with this issue. In https://github.com/whatwg/fetch/pull/579 and its tests we've found that a space like "data: image/svg,..." is handled by all browsers, see https://github.com/whatwg/fetch/pull/579#issuecomment-358820916 for examples from the wild and a minified one.

https://bugzilla.mozilla.org/show_bug.cgi?id=1389251 is still open and I've tested https://software.hixie.ch/utilities/js/live-dom-viewer/saved/5761 in Firefox 32 (works there) so this is not a recent change.

Was spaces in the URL really the problem here?

[dholbert]

its tests we've found that a space like "data: image/svg,..." is handled by all browsers

Only when ";base64" is present, I think, right? I'm guessing that triggers a different codepath / mimetype-handling somethingsomething.

[dholbert]

(See https://bugzilla.mozilla.org/show_bug.cgi?id=1389251#c19 and my just-attached "testcase 3" over there, which has a data: image/svg+xml,... that is definitely still broken in Firefox. I think @foolip's observed-to-be-working data-URIs-with-spaces all have ;base64, and that must trigger a different parsing codepath that is more space-friendly (even for earlier spaces), or something. I think that answers your question, @foolip, but let me know if I'm misunderstanding.)

[foolip]

Aha, thanks @dholbert! https://software.hixie.ch/utilities/js/live-dom-viewer/saved/5767 confirms that there is a difference, add a space there and it doesn't work in Firefox, but it does work in Chrome.

[adamopenweb]

Tested this issue again before the fix lands for https://bugzilla.mozilla.org/show_bug.cgi?id=1389251. Issue still reproduces as before. Will check back in a couple days.

[karlcow]

The layout has changed.

[softvision-oana-arbuzov]

Indeed, I can't reproduce it either.

Tested with:
Browser / Version: Firefox Nightly 68.4a1 (2019-12-16)
Operating System: Huawei P20 Lite (Android 8.0.0) - 1080 x 2280 pixels, 19:9 ratio (~432 ppi density)