Return error after font style change in IE11

[MikeGWem]

To reproduce: Enter a line of text (need not be long). select the last few characters and click the "Bold" button. Then click to set the cursor to the end of the line and press the "return" key.

the code fails at:
getChildNodes: function (parent) {
return _.map(parent.childNodes);
},
as parent is null

[jhchen]

Great thanks for reporting. I was able to reproduce on IE11. Interestingly enough it does not appear to affect IE9/10.