It seems as if this iOS/safari version ignores box-sizing:border-box when the width attribute is used (<svg width="100" style="box-sizing:border-box">), unlike the width style (<svg style="width:100px; box-sizing:border-box">).

The failing tests could easily be updated to put the sizing in the style attribute. But maybe this is also a real bug worth fixing? Seems to only occur with Safari in iOS7 (iPhone 5).

See http://swarm.jquery.org/result/2886392