Created attachment 412310 [details] screenshot of the issue Steps to reproduce the problem: 1.Open jsFiddle: https://jsfiddle.net/BlackLabel/4b2nem3v/1/ or https://jsfiddle.net/BlackLabel/4b2nem3v/1/show What is the expected behavior? No artifacts What went wrong? Artifacts are rendered Does not work on iOS 14 (OS was not available in the dropdown when reporting a bug ;) ). User reported no issues with iOS 13. Device Type: iPhone Xs
<rdar://problem/70684486>
This is a bug in a framework below WebKit.
This will be fixed via a system software change.