Like many others, I'm also experiencing issues with Highcharts not rendering in IE11. Here is what I have in jsfiddle:
And if you check my site on IE11, the Highcharts section at the top is coming up blank (at least for me):
Additionally, if you look at other pages on my site in IE which I haven't yet updated, Hichcharts seems to be broken there, as well. Examples: http://web.sonoma.edu/aa/ra/quick-facts/enrollment.html, http://web.sonoma.edu/aa/ra/quick-facts ... grads.html, and http://web.sonoma.edu/aa/ra/students/st ... thnic.html
Updating my yearly data is usually pretty non-eventful--where did I go wrong?