Steps to reproduce: 1. Go to a (long) page that triggers accelerated compositing 2. Scroll down the page 3. Navigate to a new page from the same tab 4. Hit the back button in the browser to go back to the original page Composited elements now appear in the wrong spot and scrolling the page doesn't update its contents correctly.
Created attachment 57723 [details] Proposed patch
Created attachment 57724 [details] Proposed patch
Created attachment 57842 [details] Proposed patch A simpler solution that's actually more reliable.
Comment on attachment 57842 [details] Proposed patch ok.
Comment on attachment 57842 [details] Proposed patch Clearing flags on attachment: 57842 Committed r60676: <http://trac.webkit.org/changeset/60676>
All reviewed patches have been landed. Closing bug.