"Add to my calendars" is missing the (+) icon

Location : https://extranet.atlassian.com/calendar/previewcalendar.action?subCalendarId=37e6d8bb-23b6-43ce-b37c-e02e649cc11a User-Agent : Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36 Referrer : https://extranet.atlassian.com/display/~dbutler/Bootcamp+-+Think+Like+a+PM Screen Resolution : 1440 x 900 User Name : smansour Current Dark Features : show.business.group.in.user.hover,federated.search,adg.email.enable,jira-placeholder,confluence-monitoring.enable,content.rank,confluence.request.access.enable,blueprint-retrospectives,ondemand.marketplace.prototype,blueprint-jirareports,blueprint-decisions,dfe.pin-toolbar,tasks2,confluence-questions,dfe.persistence,editor.async-script-loading,heatmapper,dfe.quick.discovery,cq.bigsearchbox,confluence.dark.feature.view-storage SpaceTheme : theme-default dashboard aui-layout aui-theme-default VersionNumber : 5.5-DEV-4167