开源版：需求批量指派功能出错。

刚刚安装了开源版本11.2版本，在添加完需求，批量指派时功能无任何响应。 

打开chrome的控制台，发现JS报错。 

all.js?v=11.2:38 Uncaught DOMException: Failed to execute 'arc' on 'CanvasRenderingContext2D': The radius provided (-0.25) is negative. 

 at a.draw (/js/all.js?v=11.2:38:16396) 

 at f. (/js/all.js?v=11.2:38:39913) 

 at Object.ac.each (/js/all.js?v=11.2:38:1908) 

 at f.draw (/js/all.js?v=11.2:38:39860) 

 at f (/js/all.js?v=11.2:38:8701)