184025 2018-03-26 14:31:31 -0700 iOS browsers (Chrome/Safari) scroll flickering due to video element 2018-03-26 15:32:48 -0700 1 1 1 Unclassified WebKit Layout and Rendering Safari 11 Unspecified Unspecified NEW InRadar P2 Normal --- 1 parris webkit-unassigned bfulgham simon.fraser webkit-bug-importer zalan oldest_to_newest 1409414 0 parris 2018-03-26 14:31:31 -0700 Summary: In mobile safari, I'm noticing screen flickering whenever I hit the edge of a scrollable area that contains an HTML5 video. In addition, scrolling seems to flicker at various other moments mainly centering around the video element Steps to Reproduce: Demo: https://codepen.io/anon/pen/ZxabYR HTML: <div class="item-content"> <img src="https://res.cloudinary.com/storyforj/image/upload/c_limit,w_1500,f_auto,fl_lossy.preserve_transparency.progressive,q_auto/ugc/3Y7A8506_izkrbg"> <img src="https://res.cloudinary.com/storyforj/image/upload/c_limit,w_1500,f_auto,fl_lossy.preserve_transparency.progressive,q_auto/ugc/3Y7A8506_izkrbg"> <video controls loop autoplay controlslist="nodownload" playsinline> <source src="https://res.cloudinary.com/storyforj/video/upload/c_limit,w_1500,f_auto,fl_lossy,q_auto/ugc/Chop1_compressed_i4x9gt.webm" type="video/webm"> <source src="https://res.cloudinary.com/storyforj/video/upload/c_limit,w_1500,f_auto,fl_lossy,q_auto/ugc/Chop1_compressed_i4x9gt.mp4" type="video/mp4"> <source src="https://res.cloudinary.com/storyforj/video/upload/c_limit,w_1500,f_auto,fl_lossy,q_auto/ugc/Chop1_compressed_i4x9gt.ogv" type="video/ogg"> </video> </div> CSS: html, body { width: 100%; height: 100%; margin: 0; padding: 0; } .item-content { width: 100%; height: 100%; overflow: auto; -webkit-overflow-scrolling: touch; } Expected Results: No flickering. The same result with images and other elements would be desirable. Actual Results: Flickering, jumpy/lagging scrolling. Version/Build: iOS 11.2.6, Safari 604? Configuration: Standard - this phone is pretty much just a factory reset 1409433 1 webkit-bug-importer 2018-03-26 15:32:48 -0700 <rdar://problem/38885817>