The WP emoji polyfill is an additional unnecessary script load and should be disabled.
Created attachment 361401 [details] Patch
Looks good, I'd r+! Emojis are supported on all platforms we care about.
Comment on attachment 361401 [details] Patch rs=me, finally no more canvas in Web Inspector's Canvas tab 😁
Comment on attachment 361401 [details] Patch Clearing flags on attachment: 361401 Committed r241174: <https://trac.webkit.org/changeset/241174>
All reviewed patches have been landed. Closing bug.
<rdar://problem/47903164>