I am having the same issue (using Drupal Foundation with Safari & Opera). The background in the element with background-attachment: fixed disappears when new content is loaded via ajax, however on the initial page load the background is there. If I switch an attribute on and off in the element inspector panel in the browser it shows up again. Does anyone have any ideas on how to address this issue? I have removed all -webkit-backface-visibility: hidden & -webkit-transform: translateZ(0x) from my css but no joy in solving this.
I am having the same issue (using Drupal Foundation with Safari & Opera). The background in the element with background-attachment: fixed disappears when new content is loaded via ajax, however on the initial page load the background is there. If I switch an attribute on and off in the element inspector panel in the browser it shows up again. Does anyone have any ideas on how to address this issue? I have removed all -webkit-backface-visibility: hidden & -webkit-transform: translateZ(0x) from my css but no joy in solving this.