[Webkit-unassigned] [Bug 103757] background-position sometimes doesn't work properly with background-attachment: fixed

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Apr 7 16:03:47 PDT 2015


John Lascurettes <lascurettes at mac.com> changed:

           What    |Removed                     |Added
                 CC|                            |lascurettes at mac.com

--- Comment #5 from John Lascurettes <lascurettes at mac.com> ---
I came to report the same or similar bug with WebKit on Safari (as seen on Yosemite 10.10.2 and Safari  8.0.4 (10600.4.10.7)). Here is a link to a test case that demonstrates where the combo of background-position and background-attachment: fixed does not work as experienced in any other browser that supports those CSS properties. 


In the test, the grass of the HTML background (html.png) should be positioned 0, 100%, or flush with the bottom of the browser's viewport, but actually is pushed mostly off the bottom edge of the viewport. 

Interesting notes: 
- Setting no explicit height, or a height:100% on the HTML element displays the same bug
- Setting height: 100vh; results in the desired behavior that other browsers display.

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