When the snapshot of WKWebView (not fullscreen mode) is taken with takeSnapshotWithConfiguration on iOS 12.2 (iPhone XR) (and any other supported version) instead of html5 video content (hardware accelerated - any youtube.com video) and any WebGL content - there is a black portion of the screen, other content around is shown normally. I suspect the issues is related to the fact some html5 videos and WebGL content is hardware accelerated and rendered differently. Exact WebKit version: AppleWebKit/605.1.15 Steps to reproduce: Take a snapshot of WKWebView (not fullscreen mode) on iOS 12.2 (iPhone XR) with takeSnapshotWithConfiguration of any playing youtube.com video (e.g. https://www.youtube.com/watch?v=CF2BfWYRZoc ) or a page with WebGL content (e.g. https://threejs.org/examples/#webgl_marchingcubes ) Result: Black part of the screen in the snapshot (image) instead of a content, other web-page content around is visible Expected result: As a user I can take a snapshot of hardware accelerated html5 videos and WebGL content, so they are present on the final snapshot image Code sample: WKSnapshotConfiguration *configuration = [WKSnapshotConfiguration new]; configuration.rect = CGRectMake(0, 0, boundsWidth, contentHeight); configuration.snapshotWidth = @(boundsWidth); //webView is WKWebView* [webView takeSnapshotWithConfiguration: configuration completionHandler: ^(UIImage * _Nullable snapshotImage, NSError * _Nullable error) { //Here is the code to deal with the image }];
<rdar://problem/51047322>