The logic added in r114283 causes some new assertions at ASSERT(rootLayer == m_clipRectsRoot);
Created attachment 139952 [details] Testcase
Created attachment 140079 [details] Patch
Comment on attachment 140079 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=140079&action=review > Source/WebCore/ChangeLog:8 > + r114283 added logic that allows compositing layres to avoid allocating their own s/layres/layers/
http://trac.webkit.org/changeset/116003