Created attachment 415839 [details] A demo of the bug Online Demo: https://jsbin.com/gucaweyica/1/edit?html,output (code is attached) <div style="filter: url(#filter)"> <div style="animation: ..."> </div> When a parent element has a filter, and the child element has an (active) animation, the child element will render without the filter applied. When the element stops animating, the filter will apply to the child element.
Thanks for filing, I can reproduce this on Safari 13.1.3 and STP 117.
<rdar://problem/72366401>
I'm also encountering with this error