RESOLVED FIXED 76939
Combination of elements breaks rendering in Safari on OSX only. 
https://bugs.webkit.org/show_bug.cgi?id=76939
Summary Combination of elements breaks rendering in Safari on OSX only.
Scott Porter
Reported 2012-01-24 13:20:11 PST
In the example I have an iFrame containing a YouTube embed, plus a nested div with a canvas element and some text inside. The parent div is moved left and right, but the canvas element stays fixed on the page. Other elements within the div move normally. If the iFrame is removed, or its src is pointed to another site, the canvas element will move fine. Additionally if "overflow:hidden" is removed from the parent container then the canvas will move fine. This seems to be some kind of interraction between YouTube's embedded content in the iframe, and the parent page which hints at a security issue. This bug does not occur in other browsers, or in the Windows version of Safari. Thanks.
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Add attachment proposed patch, testcase, etc.
Matthew Delaney
Comment 1 2012-01-25 13:15:02 PST
Scott, nice catch! I believe this is very likely just a layout bug. Nothing jumps out at me that points to any potential security issues here though unless you can think of one.
Matthew Delaney
Comment 2 2012-01-25 13:15:08 PST
<rdar://problem/10753960>
Radar WebKit Bug Importer
Comment 3 2012-01-25 13:16:28 PST
<rdar://problem/10754285>
Simon Fraser (smfr)
Comment 4 2014-10-31 20:49:23 PDT
No longer occurs.
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