[Webkit-unassigned] [Bug 160886] Incorrect clipping of fixed elements inside element with opacity, position, mix-blend-mode or filter

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu May 31 21:26:03 PDT 2018


L. David Baron <dbaron at dbaron.org> changed:

           What    |Removed                     |Added
                 CC|                            |dbaron at dbaron.org

--- Comment #4 from L. David Baron <dbaron at dbaron.org> ---
Per the spec, *filter* should create a containing block for fixed-pos descendants; see my comment at https://bugs.chromium.org/p/chromium/issues/detail?id=797493#c6 .

That said, based on my test at https://dbaron.org/css/test/2018/stacking-context-z-order WebKit isn't creating a containing block for fixed descendants for any of these properties (perhaps comment 1 was indicating that comment 0's statement is too general?).

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