JIRA アイコンは IE では表示されません

症状

All the JIRA icons are not displayed in IE8, IE9 and IE10.

IE's advanced settings are blocking the images due to a modification in the default settings or even cache from old settings applied to the browser.

Browse through Internet Options > Advanced in IE and click "Restore Advanced Settings".

Please keep in mind that this procedure will restore any modification you may have done in IE's advanced settings.