This is part of removing the tear off objects of the SVG properties.
<rdar://problem/49121836>
Created attachment 365900 [details] Patch
Created attachment 365981 [details] Patch
Comment on attachment 365981 [details] Patch Clearing flags on attachment: 365981 Committed r243515: <https://trac.webkit.org/changeset/243515>
All reviewed patches have been landed. Closing bug.
It looks like https://trac.webkit.org/changeset/243515 is causing windows 10 build failures. https://build.webkit.org/builders/Apple%20Win%2010%20Release%20%28Build%29/builds/3228 https://build.webkit.org/builders/Apple%20Win%2010%20Release%20%28Build%29/builds/3228/steps/compile-webkit/logs/stdio Please let me know if it's a quick fix or we can roll out if you need more time?
Windows build fix: <https://trac.webkit.org/changeset/243532>