Hello, I was able to replicate the behaviour. The problem is that the small a is not working. http://jsplayground.syncfusion.com/ayxn0ccp
Example: "m280,278a153,153 0 1,0-2,2l170,170m-91-117 110,110-26,26-110-110"
The small a should be valid according to the SVG 1.1 specification https://www.w3.org/TR/SVG/paths.html#PathDataEllipticalArcCommands