[Webkit-unassigned] [Bug 206898] Glyphs with `rvrn` substitutions don't respond to letter-spacing with variable font, Safari macOS & iOS

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=206898

--- Comment #6 from Myles C. Maxfield <mmaxfield at apple.com> ---
Oh, this is because, in the fast text codepath, we apply letter-spacing before shaping, which is wrong. It just usually doesn't cause problems, so AFAIK this is the first bug filed about it.

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