the dashed line in the chart is showing correctly in IE 10, but when exporting to a png image with the function exportImage, the dashed line becomes a solid line. I've been told that this can be solved with kind of polyfilling, you guys should really make this work, the reason is that this works in Chrome, for the sake of your product consistency, this feature should also work in IE.

if there is a possibility to fix an issue, I think we'd better make it.

Regards

Z. Wang