EdgeHTML doesn't display color emoji well

Hello,

Thank you for providing this information about the issue. We are pleased to report this feature is fixed in Edge 15063 and is available in our latest Insider Preview build.

Best Wishes,
The MS Edge Team

It’s broken. I can’t tell which aspects are broken by Edge and which by Windows. I will try to attach a test file which displays correctly on 15063. One common issue is that many characters have both a text and emoji presentation. Depending on the character the default presentation may be emoji or text. Edge displays many characters using the wrong default. There is also an explicit text or emoji presentation modifier. These are often ignored and the wrong character displayed. The following is one such example. U+2916 should default to text. Edge inappropriately displays it as Emoji both by default and with an explicit text presentation override. See http://www.unicode.org/Public/emoji/5.0/ for details.

U+00002196
T
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My sample file, if I can attach it, may have bad examples with gender overrides. Please ignore this.

My sample file is attached as emoji,html, and again may have bad examples with gender overrides. Please ignore this aspect.

It appears that Edge almost always defaults to emoji presentation regardless of the default in the standard and always ignores the text and emoji presentation override modifiers.

In contrast, Safari on iOS 10.3 sometimes uses the wrong default presentation but does honor the presentation overrides. It appears to ignore the text presentation override in some cases which I suspect are when it doesn’t have a non-emoji glyph but I can’t be sure.

Chrome 57 on Android 7.1.1 is better than Safari. It also gets the default presentation wrong in some cases but very few in comparison to Safari. It also does honor the presentation override modifier except in cases which I suspect are also when a non-emoji presentation glyph is not available.

Hello,

Thank you for assisting us with this case and being part of the solution. If you have discovered new problems, whether a direct result of the fix or not, please open a new case so we can easily track the progress. We look forward to additional feedback you have on how we can improve Microsoft Edge.

Best Wishes,
The MS Edge Team

Not a new bug. This one was fixed incorrectly. Do you still need a new issue to deal with this fix being incorrect?

Please test with the data at http://www.unicode.org/Public/emoji/5.0/. In particular, make sure that every emoji is tested as is, with a U+FE0E text presentation selector, and with a U+FE0F emoji presentation selector. The Unicode data will also identify which emoji support gender modifiers and skin tone modifiers which Edge and/or the Win10 Creators Update also got wrong in some cases.

Unfortunately, I can’t implement full emoji presentation classification in this release. We only picked few characters that were critical for UI cases and hardcoded them to be presented as text. Everything else will be rendered as colored emoji.
 

But I have implemented support for presentation selcetors, so page author can explicitly choose presentation form.

Which build has this fix?

Does Edge in RS3 support the full set of gender and skin tone modifiers?

Build with a fix is not public yet. I can’t tell exactly when, but it should be out soon.

Does Edge in RS3 support the full set of gender and skin tone modifiers?

Yes, as far as I am aware. Last fix went in very recently, it is not public yet as well.

It looks like 16257.1 has a fix for this but there are still issues. Variants of U+261D show this. The crux is that a presentation selector together with a gender selector looks to cause both to be mishandled. I’ll attach a file if reopening this enables it.

I’ve attached 261d.html.

Can you explain what looks wrong to you with U+261D?

I see gender modifier turned monochrome when followed by emoji presentation selector. This is issue with Segoe UI Emoji font. On Edge side everything behaves as it should, it passes all characters to the font. I would suggest you open separate issue for Segoe UI Emoji incorrectly rendering gender modifiers.
Is there anything else that I missed?
Thanks, Sergey

My first 261d.html was bad. I uploaded a second which has the URL https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/attachment/8476020/7540773/. The mistake in the first is that it had the text/emoji presentation selector twice. The order of characters should be emoji base then optional skin tone selector then gender ZWJ sequence then presentation selector. This is the order seen in http://www.unicode.org/Public/emoji/5.0/emoji-zwj-sequences.txt (e.g. 1F46E 1F3FB 200D 2640 FE0F).

261D demonstrates the issue that the text presentation is not honored when a gender is also specified. It is the case that even for characters with a default text presentation, the use of a skin token or gender is supposed to change the default presentation to emoji, I don’t see anywhere in the spec that an explicit text presentation should be ignored.

The character U+1F46F, which I also included in the attached HTML, demonstrates not only this but a regression from the previous insider build. When both gender and skin tone are present, neither are combined with the base character. This is a regression from both the previous insider build as well as 15063 which combined the skin tone selector but did not support the gender selector.

I do also see the issue of the gender selector being displayed in text form. I would report it but it’s unclear if you want this reported as an Edge issue. If so, I will. If you mean to report it against Windows, I don’t have a way except for the feedback hub which is pretty useless for a bug that will likely have a count of one.

You are right that presentation selector can follow emoji sequence, I’ll take care of that. Issue with U+1F46F actually has same root cause in the font as U+261D and they are both already fixed.

And you can always report this kind of issues in Edge database. If actual problem is in Windows, your bug will be appropriately re-routed.

I think the text and emoji presentation selectors must always be last. My reading of the BNF fragments in http://www.unicode.org/reports/tr51/ is that this is the case. Also, from this document, the following statement suggests the same.

“A text presentation selector breaks an emoji zwj sequence, preventing characters on either side from displaying as a single image. The two partial sequences should be displayed as separate images, each with presentation style as specified by any presentation selectors present, or by default style for those emoji that do not have any variation selectors.”