Fix position:-webkit-sticky behavior when zoomed
Created attachment 179878 [details]
The ref test will fail, because I can't figure out how to hide scrollbars when zoomed. overflow:hidden on the body doesn't do it.
Comment on attachment 179878 [details]
Attachment 179878 [details] did not pass mac-ews (mac):
New failing tests:
Created attachment 179968 [details]
Further fixing via bug 134535.