https://ews-build.s3-us-west-2.amazonaws.com/macOS-BigSur-Release-WK2-Tests-EWS/462910-17686/svg/gradients/spreadMethodClose2-diffs.html
rdar://101274424
This was also seen when enabling IOSurface on iOS.
Looks like that's bug 236904.
Let's dupe to that one. *** This bug has been marked as a duplicate of bug 236904 ***