**BUG**
Concise problem statement:
dirty and sharp edge of copper in case of circle outline
Steps to reproduce bug:
1. Make outline with Arc Center tool
2. Fill PCB with Cooper Area tool
Results: dirty and sharp edge of copper at bottom of the PCB
![bad edge at bottom of the PCB][1]
Expected results: smooth edge of copper
Browser: Chrome
[1]: /editor/20170814/5990be877e081.png