We had an interesting bug report come in today. One of our customers who is stuck using IE8, reported that the spell checker in our rich text editor was causing the browser to lock up.
So I launch into the debugger and am greeted with: this.$.createStyleSheet(h)
The lightbulb went off in my head. This page is compromised of many small user controls written in ASP.Net. Sometimes our developers will put their style blocks in the control since they are building at a component level. IE stops processing style tags after the 31st. I guess it also causes an exception to be thrown if you try and add one and your past that point.
Just one more reason, I am pushing our customers to Chrome