Says contetnNode is live, but that's really bad from performance perspective because this node list needs to be updated or invalidated on every style recalc unlike other node lists which only rely on DOM changes for updates and invalidations.
WebKit bug: https://bugs.webkit.org/show_bug.cgi?id=80638
FWIW, we've reverted our implementation in WebKit: http://trac.webkit.org/changeset/110639 because of this bug.
(In reply to comment #2)
> FWIW, we've reverted our implementation in WebKit:
> http://trac.webkit.org/changeset/110639 because of this bug.
Thanks for the notice Ryosuke. Mihnea and I are in the same team, so he had let me know, but I appreciate the notice anyway.
Note that we are working on an alternate proposal for the CSS OM. It is at:
I am still working on it, but if you have early feedback before we send this to www-style, I would appreciate it.