I hit a strange DrawSVG issue on my latest project. I was hunting every line of JS thinking I was doing something wrong, but I finally narrowed it down to the SVG stroke-linecap.   If I set the stroke-linecap to 'round' or 'square', IE11 and Edge won't display the stroke as it animates. DrawSVG is animating all the values, but those two browsers display nothing. The weird thing is if I animate a new value for the strokeWidth along with the drawSVG animation, it works perfectly. Even a 1/1,000t