The actual height or width of fixed position elements using a percentage value needs to be recalculated after the fixed reported size is changed. As the fixed reported size is used in the calculation of the actual height or width.
Created attachment 156380 [details]
It has not landed.
Comment on attachment 156380 [details]
Clearing flags on attachment: 156380
Committed r125036: <http://trac.webkit.org/changeset/125036>
All reviewed patches have been landed. Closing bug.