I have a sidebar that contains some products filters on an ecommerce website and has an absolute position. It works well on all browsers except for Safari on iPad and iPhone. It randomly disappears when the page scrolls.
I have tried to use the -webkit-transform: translate3d(0, 0, 0); trick as reported in many articles and other "tricks", but nothing works for me.
(iPad Safari scrolling causes HTML elements to disappear and reappear with a delay)
You can see the page at http://www.hardlyeverwornit.com/alexander-mcqueen
The sidebar is visible on mobile and iPad by clicking the REFINE SEARCH button. The class name is new-search-results-filters. At the moment I have removed the tranlate3d ... because it wasn't working.
Are you using any resize event to help you doing the position calculation? If yes, be aware that Safari has a identified bug that triggers the resize event randomly while doing scroll. This can mess up your position calculations.
来源：https://stackoverflow.com/questions/37273242/safari-absolute-positioned-div-disappear-when-scroll