[Webkit-unassigned] [Bug 160886] New: `opacity, position, mix-blend-mode, filter` create a containing block

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=160886

            Bug ID: 160886
           Summary: `opacity, position, mix-blend-mode, filter` create a
                    containing block
    Classification: Unclassified
           Product: WebKit
           Version: Safari 9
          Hardware: Macintosh
                OS: OS X 10.10
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: valdrinkoshi at gmail.com

Created attachment 286127
  --> https://bugs.webkit.org/attachment.cgi?id=286127&action=review
actual rendering

opacity, position, mix-blend-mode, filter should only create a new stacking context for its fixed descendants, and not create a containing block. Instead, in Safari this gets created, causing cropping of the fixed descendants
http://jsbin.com/coxoye/2/edit?html,output

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.webkit.org/pipermail/webkit-unassigned/attachments/20160816/91f3c29f/attachment.html>