Did I miss something? I run Yosemite and the latest Safari, including point updates, runs fine.
<a href="http:&#x2F;&#x2F;www.macworld.com&#x2F;article&#x2F;2987211&#x2F;software-web&#x2F;apple-releases-safari-9-for-yosemite.html" rel="nofollow">http:&#x2F;&#x2F;www.macworld.com&#x2F;article&#x2F;2987211&#x2F;software-web&#x2F;apple-r...</a>