[Webkit-unassigned] [Bug 199991] [FreeType] Shrugging woman emoji ��‍♀️ not joined sometimes depending on mysterious unknown conditions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=199991

--- Comment #18 from Michael Catanzaro <mcatanzaro at gnome.org> ---
(In reply to Adrian Perez from comment #15)
> Also, which version of ICU did you have before? I see that ICU 64.2 got an
> update to Unicode 12.1, so maybe it's not needed to be using ICU 65.x to
> have this fixed :]

According to comment #7, I was previously able to reproduce this issue with ICU 64.2, but not with 63.2. Meanwhile Calvaris and I were seeing different results using identical runtime versions, eliminating any possibility of software version being related to the difference except for host configuration (e.g. host fonts).

(In reply to Adrian Perez from comment #17)
> So I think that the conclusion here is that as new Unicode versions which
> add more emoji variants using ZWJ sequences, now and then there will be
> a few of them “broken” until either ICU is updated, the font is updated,
> or both are updated (depending on cases); but the problem is outside of
> WebKit's scope. WDYT?

That much is certain.

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