dos

Public/static/js/common.js

@@ -258,6 +258,7 @@ var init = function () {
 }
 var drawImage = function () {
     if (uploadedImg) {
+        ctx.save();
         ctx.clearRect(0, 0, canvas.width, canvas.height);
         ctx.fillStyle = "#ffffff";
         ctx.fillRect(0, 0, canvas.width, canvas.height);