Created attachment 470189 [details] test case Open the attached test case and resize the window. Result: the image size keep changing between preserving the aspect ratio and ignoring it.
<rdar://problem/124106110>
These are three potential merges from Blink to fix few 'pAr' related bugs in SVG: First - https://src.chromium.org/viewvc/blink?revision=178629&view=revision Second - https://chromium.googlesource.com/chromium/blink/+/515b1afb793f3a081f409776a818371130d9b9da Third - https://src.chromium.org/viewvc/blink?view=revision&revision=185226
Just to make it clear: 1. Open https://bugs.webkit.org/attachment.cgi?id=470189 in Safari 2. Resize the window Results: The green ball is bouncing/vibrating The resizing is smooth in other browsers.