Created attachment 286696 [details]
Steps to reproduce:
1. Open in browser the attached file "test case.svg"
Just arc, no extra elements.
There is a thin straight line connecting arc edges.
OS X El Capitan 10.11.4
Also reproducible in:
Mobile Safari on iOS 9.3.4
Webkit 11601.5.17.1, r204753
Works as expected in:
Chrome Version 52.0.2743.116 (64-bit)
Created attachment 286699 [details]
Screenshot of expected result
Created attachment 286700 [details]
Screenshot of actual result
This display bug is not inside WebKit, so having it here in Bugzilla is not appropriate. It's being tracked internally.