Created attachment 376825 [details]
Comment on attachment 376825 [details]
Created attachment 376860 [details]
There are some timing issues for CSS commands being sent before Page.enable, as CSS (via DOM) doesn't wait for a target to exist
Comment on attachment 376860 [details]
Clearing flags on attachment: 376860
Committed r248943: <https://trac.webkit.org/changeset/248943>
All reviewed patches have been landed. Closing bug.