Bug-org 1172205 Amazon preloads resources with <object> tags causing the throbber to blink heavily shortly after page load
初回投稿日時: 2015年06月19日19時45分34秒
カテゴリ: Firefox
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こちらのバグは世界中のAmazonのサイトでの問題のようです。
Amazon, shortly after the page has loaded, calls createElement(OBJECT) a dozen of times to load resources. We handle that just like iframes and show the spinner. Amazon does that only in Firefox... in Chrome it just doesn't do that.
Amazon checks for |document.documentElement.style.MozAppearance| and if that exists uses <object> elements to preload .js, .css, .gif, etc. files. So they basically visually f up every page load to preload resources possibly needed for further navigation.
FTR, this isn't something we changed. I can reproduce this issue with Firefox back to 2012-01-01 builds. Amazon is preloading resources using <object> tags ~2.5s after the page has finished loading and that causes our throbber to go wild. They use different tags in Chrome and IE.
とのことで、Firefoxの場合にのみ、何故か処理が遅くなる<object>
要素を利用して様々なものを先読みしているので遅くなっているようです。Amazonのサイト側の問題ということで、こちらはAmazonにコンタクトを取っている模様です。