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<body><span class="vcard"><a class="email" href="mailto:lascurettes@mac.com" title="John Lascurettes <lascurettes@mac.com>"> <span class="fn">John Lascurettes</span></a>
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<a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - background-position sometimes doesn't work properly with background-attachment: fixed"
href="https://bugs.webkit.org/show_bug.cgi?id=103757">bug 103757</a>
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<td>lascurettes@mac.com
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<b><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - background-position sometimes doesn't work properly with background-attachment: fixed"
href="https://bugs.webkit.org/show_bug.cgi?id=103757#c5">Comment # 5</a>
on <a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - background-position sometimes doesn't work properly with background-attachment: fixed"
href="https://bugs.webkit.org/show_bug.cgi?id=103757">bug 103757</a>
from <span class="vcard"><a class="email" href="mailto:lascurettes@mac.com" title="John Lascurettes <lascurettes@mac.com>"> <span class="fn">John Lascurettes</span></a>
</span></b>
<pre>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.
<a href="http://emological.com/box/bgtest/">http://emological.com/box/bgtest/</a>
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.</pre>
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